102215816 has 32 divisors (see below), whose sum is σ = 198015840. Its totient is φ = 49435008.

The previous prime is 102215797. The next prime is 102215831. The reversal of 102215816 is 618512201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35420 + ... + 38196.

It is an arithmetic number, because the mean of its divisors is an integer number (6187995).

Almost surely, 2^102215816 is an apocalyptic number.

It is an amenable number.

102215816 is a deficient number, since it is larger than the sum of its proper divisors (95800024).

102215816 is a wasteful number, since it uses less digits than its factorization.

102215816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 102215816 is about 10110.1837767669. The cubic root of 102215816 is about 467.5621711859.

The spelling of 102215816 in words is "one hundred two million, two hundred fifteen thousand, eight hundred sixteen".