20930370 has 32 divisors (see below), whose sum is σ = 50353920. Its totient is φ = 5568000.

The previous prime is 20930323. The next prime is 20930387. The reversal of 20930370 is 7303902.

It is a self number, because there is not a number n which added to its sum of digits gives 20930370.

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, 22066 + ... + 22994.

It is an arithmetic number, because the mean of its divisors is an integer number (1573560).

Almost surely, 2^20930370 is an apocalyptic number.

20930370 is an abundant number, since it is smaller than the sum of its proper divisors (29423550).

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

20930370 is a wasteful number, since it uses less digits than its factorization.

20930370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 20930370 is about 4574.9721310627. The cubic root of 20930370 is about 275.5871531890.

The spelling of 20930370 in words is "twenty million, nine hundred thirty thousand, three hundred seventy".