23070920 has 32 divisors (see below), whose sum is σ = 52627320. Its totient is φ = 9100800.

The previous prime is 23070907. The next prime is 23070973. The reversal of 23070920 is 2907032.

It can be written as a sum of positive squares in 4 ways, for example, as 20593444 + 2477476 = 4538^2 + 1574^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031 + ... + 6870.

Almost surely, 2^23070920 is an apocalyptic number.

23070920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23070920 is an abundant number, since it is smaller than the sum of its proper divisors (29556400).

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

23070920 is a wasteful number, since it uses less digits than its factorization.

23070920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985 (or 7981 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 23070920 is about 4803.2197534570. The cubic root of 23070920 is about 284.6786981321.

Adding to 23070920 its reverse (2907032), we get a palindrome (25977952).

The spelling of 23070920 in words is "twenty-three million, seventy thousand, nine hundred twenty".