253667780 has 12 divisors (see below), whose sum is σ = 532702380. Its totient is φ = 101467104.

The previous prime is 253667767. The next prime is 253667783. The reversal of 253667780 is 87766352.

It can be written as a sum of positive squares in 2 ways, for example, as 193822084 + 59845696 = 13922^2 + 7736^2 .

It is a super-2 number, since 2×253667780² = 128694685220256800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253667783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6341675 + ... + 6341714.

It is an arithmetic number, because the mean of its divisors is an integer number (44391865).

Almost surely, 2^253667780 is an apocalyptic number.

253667780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253667780 is an abundant number, since it is smaller than the sum of its proper divisors (279034600).

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

253667780 is a wasteful number, since it uses less digits than its factorization.

253667780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12683398 (or 12683396 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 253667780 is about 15926.9513718100. The cubic root of 253667780 is about 633.0263227293.

The spelling of 253667780 in words is "two hundred fifty-three million, six hundred sixty-seven thousand, seven hundred eighty".