102891844 has 24 divisors (see below), whose sum is σ = 197987328. Its totient is φ = 46398240.

The previous prime is 102891839. The next prime is 102891881. The reversal of 102891844 is 448198201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3619 + ... + 14794.

It is an arithmetic number, because the mean of its divisors is an integer number (8249472).

Almost surely, 2^102891844 is an apocalyptic number.

It is an amenable number.

102891844 is a deficient number, since it is larger than the sum of its proper divisors (95095484).

102891844 is a wasteful number, since it uses less digits than its factorization.

102891844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18555 (or 18553 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 102891844 is about 10143.5617018876. The cubic root of 102891844 is about 468.5906840158.

The spelling of 102891844 in words is "one hundred two million, eight hundred ninety-one thousand, eight hundred forty-four".