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164915480 = 2354787721
BaseRepresentation
bin10011101010001…
…10100100011000
3102111022120111202
421311012210120
5314204243410
624210413332
74041521102
oct1165064430
9374276452
10164915480
11850aa494
1247291248
1328221c32
1417c8c572
15e728ca5
hex9d46918

164915480 has 32 divisors (see below), whose sum is σ = 378959040. Its totient is φ = 64561920.

The previous prime is 164915473. The next prime is 164915533. The reversal of 164915480 is 84519461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41981 + ... + 45740.

It is an arithmetic number, because the mean of its divisors is an integer number (11842470).

Almost surely, 2164915480 is an apocalyptic number.

164915480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164915480 is an abundant number, since it is smaller than the sum of its proper divisors (214043560).

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

164915480 is a wasteful number, since it uses less digits than its factorization.

164915480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87779 (or 87775 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 164915480 is about 12841.9422207079. The cubic root of 164915480 is about 548.3869875611.

The spelling of 164915480 in words is "one hundred sixty-four million, nine hundred fifteen thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 47 94 188 235 376 470 940 1880 87721 175442 350884 438605 701768 877210 1754420 3508840 4122887 8245774 16491548 20614435 32983096 41228870 82457740 164915480