253420220 has 24 divisors (see below), whose sum is σ = 533804208. Its totient is φ = 101059200.

The previous prime is 253420201. The next prime is 253420231. The reversal of 253420220 is 22024352.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 253420192 and 253420201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12521 + ... + 25760.

It is an arithmetic number, because the mean of its divisors is an integer number (22241842).

Almost surely, 2^253420220 is an apocalyptic number.

253420220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253420220 is an abundant number, since it is smaller than the sum of its proper divisors (280383988).

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

253420220 is a wasteful number, since it uses less digits than its factorization.

253420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38621 (or 38619 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 253420220 is about 15919.1777425846. The cubic root of 253420220 is about 632.8203275707.

Adding to 253420220 its reverse (22024352), we get a palindrome (275444572).

The spelling of 253420220 in words is "two hundred fifty-three million, four hundred twenty thousand, two hundred twenty".