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87257500382 = 2138747383681
BaseRepresentation
bin101000101000011110…
…0111100101011011110
322100020010101021220102
41101100330330223132
52412200410003012
6104030251021102
76206215341563
oct1212074745336
9270203337812
1087257500382
1134007647588
1214ab243a792
1382c78a8340
14431a9a486a
15240a6ee2c2
hex1450f3cade

87257500382 has 16 divisors (see below), whose sum is σ = 140970905712. Its totient is φ = 40267983360.

The previous prime is 87257500373. The next prime is 87257500423. The reversal of 87257500382 is 28300575278.

It is a happy number.

It is a super-2 number, since 2×872575003822 (a number of 23 digits) contains 22 as substring.

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, 35582 + ... + 419262.

It is an arithmetic number, because the mean of its divisors is an integer number (8810681607).

Almost surely, 287257500382 is an apocalyptic number.

87257500382 is a deficient number, since it is larger than the sum of its proper divisors (53713405330).

87257500382 is a wasteful number, since it uses less digits than its factorization.

87257500382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392443.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 87257500382 in words is "eighty-seven billion, two hundred fifty-seven million, five hundred thousand, three hundred eighty-two".

Divisors: 1 2 13 26 8747 17494 113711 227422 383681 767362 4987853 9975706 3356057707 6712115414 43628750191 87257500382