84621530 has 32 divisors (see below), whose sum is σ = 177638400. Its totient is φ = 29011920.

The previous prime is 84621521. The next prime is 84621569. The reversal of 84621530 is 3512648.

It is a junction number, because it is equal to n+sod(n) for n = 84621493 and 84621502.

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, 8906 + ... + 15765.

It is an arithmetic number, because the mean of its divisors is an integer number (5551200).

Almost surely, 2^84621530 is an apocalyptic number.

84621530 is an abundant number, since it is smaller than the sum of its proper divisors (93016870).

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

84621530 is a wasteful number, since it uses less digits than its factorization.

84621530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24699 (or 24685 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 84621530 is about 9198.9961408841. The cubic root of 84621530 is about 439.0294205268.

The spelling of 84621530 in words is "eighty-four million, six hundred twenty-one thousand, five hundred thirty".