20679330 has 32 divisors (see below), whose sum is σ = 56721024. Its totient is φ = 4726656.

The previous prime is 20679317. The next prime is 20679341. The reversal of 20679330 is 3397602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 49027 + ... + 49446.

It is an arithmetic number, because the mean of its divisors is an integer number (1772532).

Almost surely, 2^20679330 is an apocalyptic number.

20679330 is an abundant number, since it is smaller than the sum of its proper divisors (36041694).

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

20679330 is a wasteful number, since it uses less digits than its factorization.

20679330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98490.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 20679330 is about 4547.4531333484. The cubic root of 20679330 is about 274.4809161221.

The spelling of 20679330 in words is "twenty million, six hundred seventy-nine thousand, three hundred thirty".