23170920 has 64 divisors (see below), whose sum is σ = 69837120. Its totient is φ = 6150144.

The previous prime is 23170909. The next prime is 23170967. The reversal of 23170920 is 2907132.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 42087 + ... + 42633.

It is an arithmetic number, because the mean of its divisors is an integer number (1091205).

Almost surely, 2^23170920 is an apocalyptic number.

23170920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23170920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34918560).

23170920 is an abundant number, since it is smaller than the sum of its proper divisors (46666200).

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

23170920 is a wasteful number, since it uses less digits than its factorization.

23170920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 23170920 is about 4813.6181817838. The cubic root of 23170920 is about 285.0894148499.

It can be divided in two parts, 23170 and 920, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23170920 in words is "twenty-three million, one hundred seventy thousand, nine hundred twenty".