23998770 has 48 divisors (see below), whose sum is σ = 63063000. Its totient is φ = 6331392.

The previous prime is 23998769. The next prime is 23998783. The reversal of 23998770 is 7789932.

It can be written as a sum of positive squares in 4 ways, for example, as 13905441 + 10093329 = 3729^2 + 3177^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7356 + ... + 10104.

Almost surely, 2^23998770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23998770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31531500).

23998770 is an abundant number, since it is smaller than the sum of its proper divisors (39064230).

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

23998770 is a wasteful number, since it uses less digits than its factorization.

23998770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 23998770 is about 4898.8539476086. The cubic root of 23998770 is about 288.4449862913. Note that the first 3 decimals are identical.

The spelling of 23998770 in words is "twenty-three million, nine hundred ninety-eight thousand, seven hundred seventy".