253237620 has 72 divisors (see below), whose sum is σ = 728983584. Its totient is φ = 65683584.

The previous prime is 253237597. The next prime is 253237637. The reversal of 253237620 is 26732352.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 23 ways as a sum of consecutive naturals, for example, 80599 + ... + 83681.

It is an arithmetic number, because the mean of its divisors is an integer number (10124772).

Almost surely, 2^253237620 is an apocalyptic number.

253237620 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 253237620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364491792).

253237620 is an abundant number, since it is smaller than the sum of its proper divisors (475745964).

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

253237620 is a wasteful number, since it uses less digits than its factorization.

253237620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169 (or 3130 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 253237620 is about 15913.4414882514. The cubic root of 253237620 is about 632.6682997694.

Adding to 253237620 its reverse (26732352), we get a palindrome (279969972).

The spelling of 253237620 in words is "two hundred fifty-three million, two hundred thirty-seven thousand, six hundred twenty".