102891628 has 48 divisors (see below), whose sum is σ = 211486464. Its totient is φ = 42891840.

The previous prime is 102891619. The next prime is 102891637. The reversal of 102891628 is 826198201.

It is an interprime number because it is at equal distance from previous prime (102891619) and next prime (102891637).

It is a super-2 number, since 2×102891628² = 21173374224980768, which contains 22 as substring.

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, 182475 + ... + 183037.

It is an arithmetic number, because the mean of its divisors is an integer number (4405968).

Almost surely, 2^102891628 is an apocalyptic number.

It is an amenable number.

102891628 is an abundant number, since it is smaller than the sum of its proper divisors (108594836).

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

102891628 is a wasteful number, since it uses less digits than its factorization.

102891628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 102891628 is about 10143.5510547342. The cubic root of 102891628 is about 468.5903561127.

The spelling of 102891628 in words is "one hundred two million, eight hundred ninety-one thousand, six hundred twenty-eight".