20923160 has 32 divisors (see below), whose sum is σ = 47552400. Its totient is φ = 8284800.

The previous prime is 20923159. The next prime is 20923163. The reversal of 20923160 is 6132902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20923163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451 + ... + 6629.

Almost surely, 2^20923160 is an apocalyptic number.

20923160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20923160 is an abundant number, since it is smaller than the sum of its proper divisors (26629240).

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

20923160 is a wasteful number, since it uses less digits than its factorization.

20923160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291 (or 5287 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20923160 is about 4574.1840802486. The cubic root of 20923160 is about 275.5555052125. Note that the first 4 decimals are identical.

The spelling of 20923160 in words is "twenty million, nine hundred twenty-three thousand, one hundred sixty".