23390487 has 12 divisors (see below), whose sum is σ = 35773920. Its totient is φ = 14676288.

The previous prime is 23390473. The next prime is 23390509. The reversal of 23390487 is 78409332.

It is not a de Polignac number, because 23390487 - 2¹¹ = 23388439 is a prime.

It is a super-2 number, since 2×23390487² = 1094229764194338, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23390407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76287 + ... + 76592.

It is an arithmetic number, because the mean of its divisors is an integer number (2981160).

Almost surely, 2^23390487 is an apocalyptic number.

23390487 is a deficient number, since it is larger than the sum of its proper divisors (12383433).

23390487 is a wasteful number, since it uses less digits than its factorization.

23390487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152902 (or 152899 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 23390487 is about 4836.3712636645. The cubic root of 23390487 is about 285.9870851749.

The spelling of 23390487 in words is "twenty-three million, three hundred ninety thousand, four hundred eighty-seven".