20315006 has 16 divisors (see below), whose sum is σ = 31776624. Its totient is φ = 9731904.

The previous prime is 20314981. The next prime is 20315011. The reversal of 20315006 is 60051302.

It is a congruent number.

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, 2330 + ... + 6786.

It is an arithmetic number, because the mean of its divisors is an integer number (1986039).

Almost surely, 2^20315006 is an apocalyptic number.

20315006 is a deficient number, since it is larger than the sum of its proper divisors (11461618).

20315006 is a wasteful number, since it uses less digits than its factorization.

20315006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20315006 is about 4507.2171014940. The cubic root of 20315006 is about 272.8594409421.

Adding to 20315006 its reverse (60051302), we get a palindrome (80366308).

The spelling of 20315006 in words is "twenty million, three hundred fifteen thousand, six".