20315922 has 16 divisors (see below), whose sum is σ = 44325792. Its totient is φ = 6156320.

The previous prime is 20315917. The next prime is 20316017. The reversal of 20315922 is 22951302.

It is a junction number, because it is equal to n+sod(n) for n = 20315892 and 20315901.

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, 153843 + ... + 153974.

It is an arithmetic number, because the mean of its divisors is an integer number (2770362).

Almost surely, 2^20315922 is an apocalyptic number.

20315922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20315922 is an abundant number, since it is smaller than the sum of its proper divisors (24009870).

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

20315922 is a wasteful number, since it uses less digits than its factorization.

20315922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307833.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20315922 is about 4507.3187151565. The cubic root of 20315922 is about 272.8635419416.

The spelling of 20315922 in words is "twenty million, three hundred fifteen thousand, nine hundred twenty-two".