23253420 has 48 divisors (see below), whose sum is σ = 66013920. Its totient is φ = 6114816.

The previous prime is 23253409. The next prime is 23253431. The reversal of 23253420 is 2435232.

23253420 = 528² + 529² + ... + 600².

It is an interprime number because it is at equal distance from previous prime (23253409) and next prime (23253431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726 + ... + 7034.

It is an arithmetic number, because the mean of its divisors is an integer number (1375290).

Almost surely, 2^23253420 is an apocalyptic number.

23253420 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 23253420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33006960).

23253420 is an abundant number, since it is smaller than the sum of its proper divisors (42760500).

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

23253420 is a wasteful number, since it uses less digits than its factorization.

23253420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394 (or 5392 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 23253420 is about 4822.1800049355. The cubic root of 23253420 is about 285.4273674453.

Adding to 23253420 its reverse (2435232), we get a palindrome (25688652).

The spelling of 23253420 in words is "twenty-three million, two hundred fifty-three thousand, four hundred twenty".