820022502 has 32 divisors (see below), whose sum is σ = 1827110880. Its totient is φ = 243613440.

The previous prime is 820022477. The next prime is 820022551. The reversal of 820022502 is 205220028.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 178999 + ... + 183522.

It is an arithmetic number, because the mean of its divisors is an integer number (57097215).

Almost surely, 2^820022502 is an apocalyptic number.

820022502 is an abundant number, since it is smaller than the sum of its proper divisors (1007088378).

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

820022502 is a wasteful number, since it uses less digits than its factorization.

820022502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362568.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 820022502 is about 28636.0350258202. The cubic root of 820022502 is about 935.9987238824.

The spelling of 820022502 in words is "eight hundred twenty million, twenty-two thousand, five hundred two".