23447890 has 8 divisors (see below), whose sum is σ = 42206220. Its totient is φ = 9379152.

The previous prime is 23447887. The next prime is 23447891. The reversal of 23447890 is 9874432.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22953681 + 494209 = 4791^2 + 703^2 .

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 (23447891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172385 + ... + 1172404.

Almost surely, 2^23447890 is an apocalyptic number.

23447890 is a deficient number, since it is larger than the sum of its proper divisors (18758330).

23447890 is a wasteful number, since it uses less digits than its factorization.

23447890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344796.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 23447890 is about 4842.3021384461. The cubic root of 23447890 is about 286.2208426789.

The spelling of 23447890 in words is "twenty-three million, four hundred forty-seven thousand, eight hundred ninety".