23941890 has 144 divisors (see below), whose sum is σ = 74426040. Its totient is φ = 5322240.

The previous prime is 23941877. The next prime is 23941903. The reversal of 23941890 is 9814932.

23941890 is a `hidden beast` number, since 239 + 418 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23941877) and next prime (23941903).

It can be written as a sum of positive squares in 4 ways, for example, as 8520561 + 15421329 = 2919^2 + 3927^2 .

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 268966 + ... + 269054.

Almost surely, 2^23941890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23941890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37213020).

23941890 is an abundant number, since it is smaller than the sum of its proper divisors (50484150).

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

23941890 is a wasteful number, since it uses less digits than its factorization.

23941890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 23941890 is about 4893.0450641702. The cubic root of 23941890 is about 288.2169227987.

The spelling of 23941890 in words is "twenty-three million, nine hundred forty-one thousand, eight hundred ninety".