820512902 has 32 divisors (see below), whose sum is σ = 1410566400. Its totient is φ = 354317920.

The previous prime is 820512899. The next prime is 820512943. The reversal of 820512902 is 209215028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69953 + ... + 80835.

It is an arithmetic number, because the mean of its divisors is an integer number (44080200).

Almost surely, 2^820512902 is an apocalyptic number.

820512902 is a deficient number, since it is larger than the sum of its proper divisors (590053498).

820512902 is a wasteful number, since it uses less digits than its factorization.

820512902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11068.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 820512902 is about 28644.5963839604. The cubic root of 820512902 is about 936.1852725449.

The spelling of 820512902 in words is "eight hundred twenty million, five hundred twelve thousand, nine hundred two".