102691850 has 12 divisors (see below), whose sum is σ = 191006934. Its totient is φ = 41076720.

The previous prime is 102691837. The next prime is 102691861. The reversal of 102691850 is 58196201.

It can be written as a sum of positive squares in 3 ways, for example, as 95277121 + 7414729 = 9761^2 + 2723^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1026869 + ... + 1026968.

Almost surely, 2^102691850 is an apocalyptic number.

102691850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102691850 is a deficient number, since it is larger than the sum of its proper divisors (88315084).

102691850 is a wasteful number, since it uses less digits than its factorization.

102691850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053849 (or 2053844 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 102691850 is about 10133.6987324471. The cubic root of 102691850 is about 468.2868824498.

The spelling of 102691850 in words is "one hundred two million, six hundred ninety-one thousand, eight hundred fifty".