102850640 has 20 divisors (see below), whose sum is σ = 239127924. Its totient is φ = 41140224.

The previous prime is 102850633. The next prime is 102850651. The reversal of 102850640 is 46058201.

It can be written as a sum of positive squares in 2 ways, for example, as 45212176 + 57638464 = 6724^2 + 7592^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642737 + ... + 642896.

Almost surely, 2^102850640 is an apocalyptic number.

102850640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102850640 is an abundant number, since it is smaller than the sum of its proper divisors (136277284).

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

102850640 is a wasteful number, since it uses less digits than its factorization.

102850640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285646 (or 1285640 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 102850640 is about 10141.5304564942. The cubic root of 102850640 is about 468.5281251588.

The spelling of 102850640 in words is "one hundred two million, eight hundred fifty thousand, six hundred forty".