23428560 has 160 divisors (see below), whose sum is σ = 77709312. Its totient is φ = 5829120.

The previous prime is 23428553. The next prime is 23428571. The reversal of 23428560 is 6582432.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349647 + ... + 349713.

Almost surely, 2^23428560 is an apocalyptic number.

23428560 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 23428560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38854656).

23428560 is an abundant number, since it is smaller than the sum of its proper divisors (54280752).

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

23428560 is a wasteful number, since it uses less digits than its factorization.

23428560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 23428560 is about 4840.3057754650. The cubic root of 23428560 is about 286.1421693609.

The spelling of 23428560 in words is "twenty-three million, four hundred twenty-eight thousand, five hundred sixty".