23392890 has 48 divisors (see below), whose sum is σ = 61833096. Its totient is φ = 6134400.

The previous prime is 23392877. The next prime is 23392891. The reversal of 23392890 is 9829332.

It can be written as a sum of positive squares in 4 ways, for example, as 18688329 + 4704561 = 4323^2 + 2169^2 .

It is not an unprimeable number, because it can be changed into a prime (23392891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3360 + ... + 7620.

Almost surely, 2^23392890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23392890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30916548).

23392890 is an abundant number, since it is smaller than the sum of its proper divisors (38440206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23392890 is a wasteful number, since it uses less digits than its factorization.

23392890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4332 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 23392890 is about 4836.6196873436. The cubic root of 23392890 is about 285.9968783789.

The spelling of 23392890 in words is "twenty-three million, three hundred ninety-two thousand, eight hundred ninety".