102440636 has 12 divisors (see below), whose sum is σ = 183085728. Its totient is φ = 50130432.

The previous prime is 102440617. The next prime is 102440641. The reversal of 102440636 is 636044201.

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, 272261 + ... + 272636.

It is an arithmetic number, because the mean of its divisors is an integer number (15257144).

Almost surely, 2^102440636 is an apocalyptic number.

It is an amenable number.

102440636 is a deficient number, since it is larger than the sum of its proper divisors (80645092).

102440636 is a wasteful number, since it uses less digits than its factorization.

102440636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544948 (or 544946 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 102440636 is about 10121.2961620536. The cubic root of 102440636 is about 467.9047155468.

Adding to 102440636 its reverse (636044201), we get a palindrome (738484837).

The spelling of 102440636 in words is "one hundred two million, four hundred forty thousand, six hundred thirty-six".