23905780 has 24 divisors (see below), whose sum is σ = 50309280. Its totient is φ = 9541920.

The previous prime is 23905759. The next prime is 23905837. The reversal of 23905780 is 8750932.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11415 + ... + 13345.

It is an arithmetic number, because the mean of its divisors is an integer number (2096220).

Almost surely, 2^23905780 is an apocalyptic number.

23905780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23905780 is an abundant number, since it is smaller than the sum of its proper divisors (26403500).

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

23905780 is a wasteful number, since it uses less digits than its factorization.

23905780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2557 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 23905780 is about 4889.3537405265. The cubic root of 23905780 is about 288.0719502590.

The spelling of 23905780 in words is "twenty-three million, nine hundred five thousand, seven hundred eighty".