23986540 has 24 divisors (see below), whose sum is σ = 50838480. Its totient is φ = 9505728.

The previous prime is 23986519. The next prime is 23986553. The reversal of 23986540 is 4568932.

It is a self number, because there is not a number n which added to its sum of digits gives 23986540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3322 + ... + 7681.

It is an arithmetic number, because the mean of its divisors is an integer number (2118270).

Almost surely, 2^23986540 is an apocalyptic number.

23986540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23986540 is an abundant number, since it is smaller than the sum of its proper divisors (26851940).

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

23986540 is a wasteful number, since it uses less digits than its factorization.

23986540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121 (or 11119 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 23986540 is about 4897.6055374029. The cubic root of 23986540 is about 288.3959798686.

The spelling of 23986540 in words is "twenty-three million, nine hundred eighty-six thousand, five hundred forty".