20079930 has 32 divisors (see below), whose sum is σ = 51899904. Its totient is φ = 4942656.

The previous prime is 20079929. The next prime is 20079931. The reversal of 20079930 is 3997002.

It is an interprime number because it is at equal distance from previous prime (20079929) and next prime (20079931).

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

It is not an unprimeable number, because it can be changed into a prime (20079931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25354 + ... + 26133.

It is an arithmetic number, because the mean of its divisors is an integer number (1621872).

Almost surely, 2^20079930 is an apocalyptic number.

20079930 is an abundant number, since it is smaller than the sum of its proper divisors (31819974).

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

20079930 is a wasteful number, since it uses less digits than its factorization.

20079930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51510.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 20079930 is about 4481.0634898426. The cubic root of 20079930 is about 271.8028866740.

The spelling of 20079930 in words is "twenty million, seventy-nine thousand, nine hundred thirty".