23587920 has 90 divisors (see below), whose sum is σ = 79656174. Its totient is φ = 6255360.

The previous prime is 23587919. The next prime is 23587939. The reversal of 23587920 is 2978532.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2903616 + 20684304 = 1704^2 + 4548^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 17 ways as a sum of consecutive naturals, for example, 130230 + ... + 130410.

Almost surely, 2^23587920 is an apocalyptic number.

23587920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23587920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39828087).

23587920 is an abundant number, since it is smaller than the sum of its proper divisors (56068254).

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

23587920 is a wasteful number, since it uses less digits than its factorization.

23587920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 23587920 is about 4856.7396471295. The cubic root of 23587920 is about 286.7894792567.

The spelling of 23587920 in words is "twenty-three million, five hundred eighty-seven thousand, nine hundred twenty".