20079660 has 24 divisors (see below), whose sum is σ = 56223216. Its totient is φ = 5354560.

The previous prime is 20079623. The next prime is 20079673. The reversal of 20079660 is 6697002.

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 7 ways as a sum of consecutive naturals, for example, 167271 + ... + 167390.

It is an arithmetic number, because the mean of its divisors is an integer number (2342634).

Almost surely, 2^20079660 is an apocalyptic number.

20079660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20079660 is an abundant number, since it is smaller than the sum of its proper divisors (36143556).

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

20079660 is a wasteful number, since it uses less digits than its factorization.

20079660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334673 (or 334671 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20079660 is about 4481.0333629644. The cubic root of 20079660 is about 271.8016684243.

The spelling of 20079660 in words is "twenty million, seventy-nine thousand, six hundred sixty".