23091740 has 36 divisors (see below), whose sum is σ = 56412216. Its totient is φ = 7916832.

The previous prime is 23091703. The next prime is 23091769. The reversal of 23091740 is 4719032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10802 + ... + 12761.

It is an arithmetic number, because the mean of its divisors is an integer number (1567006).

Almost surely, 2^23091740 is an apocalyptic number.

23091740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23091740 is an abundant number, since it is smaller than the sum of its proper divisors (33320476).

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

23091740 is a wasteful number, since it uses less digits than its factorization.

23091740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23586 (or 23577 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 23091740 is about 4805.3865609335. The cubic root of 23091740 is about 284.7643070354.

The spelling of 23091740 in words is "twenty-three million, ninety-one thousand, seven hundred forty".