23415890 has 8 divisors (see below), whose sum is σ = 42148620. Its totient is φ = 9366352.

The previous prime is 23415869. The next prime is 23415893. The reversal of 23415890 is 9851432.

It can be written as a sum of positive squares in 2 ways, for example, as 23396569 + 19321 = 4837^2 + 139^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23415893) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1170785 + ... + 1170804.

Almost surely, 2^23415890 is an apocalyptic number.

23415890 is a deficient number, since it is larger than the sum of its proper divisors (18732730).

23415890 is a wasteful number, since it uses less digits than its factorization.

23415890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341596.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 23415890 is about 4838.9967968578. The cubic root of 23415890 is about 286.0905788375.

The spelling of 23415890 in words is "twenty-three million, four hundred fifteen thousand, eight hundred ninety".