23638770 has 64 divisors (see below), whose sum is σ = 65232000. Its totient is φ = 6084288.

The previous prime is 23638753. The next prime is 23638801. The reversal of 23638770 is 7783632.

It is a super-2 number, since 2×23638770² = 1117582894225800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6321 + ... + 9339.

It is an arithmetic number, because the mean of its divisors is an integer number (1019250).

Almost surely, 2^23638770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23638770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32616000).

23638770 is an abundant number, since it is smaller than the sum of its proper divisors (41593230).

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

23638770 is a wasteful number, since it uses less digits than its factorization.

23638770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3058 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 23638770 is about 4861.9718222137. The cubic root of 23638770 is about 286.9954148685.

The spelling of 23638770 in words is "twenty-three million, six hundred thirty-eight thousand, seven hundred seventy".