23542491 has 32 divisors (see below), whose sum is σ = 37094400. Its totient is φ = 13274688.

The previous prime is 23542451. The next prime is 23542499. The reversal of 23542491 is 19424532.

It is not a de Polignac number, because 23542491 - 2¹⁰ = 23541467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23542499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140890 + ... + 141056.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 2^23542491 is an apocalyptic number.

23542491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23542491 is a deficient number, since it is larger than the sum of its proper divisors (13551909).

23542491 is a wasteful number, since it uses less digits than its factorization.

23542491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 314 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 23542491 is about 4852.0604901423. The cubic root of 23542491 is about 286.6052474931.

The spelling of 23542491 in words is "twenty-three million, five hundred forty-two thousand, four hundred ninety-one".