23280491 has 8 divisors (see below), whose sum is σ = 26391120. Its totient is φ = 20358432.

The previous prime is 23280487. The next prime is 23280539. The reversal of 23280491 is 19408232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23280491 - 2² = 23280487 is a prime.

It is a super-2 number, since 2×23280491² = 1083962522402162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23282491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46880 + ... + 47373.

It is an arithmetic number, because the mean of its divisors is an integer number (3298890).

Almost surely, 2^23280491 is an apocalyptic number.

23280491 is a deficient number, since it is larger than the sum of its proper divisors (3110629).

23280491 is a wasteful number, since it uses less digits than its factorization.

23280491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94285.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 23280491 is about 4824.9861139697. The cubic root of 23280491 is about 285.5380867539.

The spelling of 23280491 in words is "twenty-three million, two hundred eighty thousand, four hundred ninety-one".