23261400 has 72 divisors (see below), whose sum is σ = 78125580. Its totient is φ = 6202560.

The previous prime is 23261387. The next prime is 23261429. The reversal of 23261400 is 416232.

It is a happy number.

23261400 is a `hidden beast` number, since 2 + 3 + 261 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4662 + ... + 8261.

Almost surely, 2^23261400 is an apocalyptic number.

23261400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23261400 is an abundant number, since it is smaller than the sum of its proper divisors (54864180).

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

23261400 is a wasteful number, since it uses less digits than its factorization.

23261400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12945 (or 12933 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23261400 is about 4823.0073605583. The cubic root of 23261400 is about 285.4600142544.

Adding to 23261400 its reverse (416232), we get a palindrome (23677632).

The spelling of 23261400 in words is "twenty-three million, two hundred sixty-one thousand, four hundred".