82620450 has 72 divisors (see below), whose sum is σ = 242167536. Its totient is φ = 20028000.

The previous prime is 82620443. The next prime is 82620469. The reversal of 82620450 is 5402628.

It is a super-2 number, since 2×82620450² = 13652277516405000, which contains 22 as substring.

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 35 ways as a sum of consecutive naturals, for example, 3396 + ... + 13295.

It is an arithmetic number, because the mean of its divisors is an integer number (3363438).

Almost surely, 2^82620450 is an apocalyptic number.

82620450 is an abundant number, since it is smaller than the sum of its proper divisors (159547086).

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

82620450 is a wasteful number, since it uses less digits than its factorization.

82620450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16720 (or 16712 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 82620450 is about 9089.5791981807. The cubic root of 82620450 is about 435.5411418374.

The spelling of 82620450 in words is "eighty-two million, six hundred twenty thousand, four hundred fifty".