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12457232480 = 2557111011139
BaseRepresentation
bin10111001101000001…
…00100100001100000
31012011011110222101202
423212200210201200
5201003022414410
65420041420332
7620462505020
oct134640444140
935134428352
1012457232480
115312868160
1224b7a9a6a8
131236ac44a4
1486263da80
154cd98bca5
hex2e6824860

12457232480 has 96 divisors (see below), whose sum is σ = 36692248320. Its totient is φ = 3882769920.

The previous prime is 12457232471. The next prime is 12457232497. The reversal of 12457232480 is 8423275421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493250 + ... + 517889.

It is an arithmetic number, because the mean of its divisors is an integer number (382210920).

Almost surely, 212457232480 is an apocalyptic number.

12457232480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12457232480 is an abundant number, since it is smaller than the sum of its proper divisors (24235015840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12457232480 is a wasteful number, since it uses less digits than its factorization.

12457232480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011172 (or 1011164 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 12457232480 in words is "twelve billion, four hundred fifty-seven million, two hundred thirty-two thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 11 14 16 20 22 28 32 35 40 44 55 56 70 77 80 88 110 112 140 154 160 176 220 224 280 308 352 385 440 560 616 770 880 1120 1232 1540 1760 2464 3080 6160 12320 1011139 2022278 4044556 5055695 7077973 8089112 10111390 11122529 14155946 16178224 20222780 22245058 28311892 32356448 35389865 40445560 44490116 55612645 56623784 70779730 77857703 80891120 88980232 111225290 113247568 141559460 155715406 161782240 177960464 222450580 226495136 283118920 311430812 355920928 389288515 444901160 566237840 622861624 778577030 889802320 1132475680 1245723248 1557154060 1779604640 2491446496 3114308120 6228616240 12457232480