272660388 has 96 divisors (see below), whose sum is σ = 854246400. Its totient is φ = 65370240.

The previous prime is 272660359. The next prime is 272660413. The reversal of 272660388 is 883066272.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663 + ... + 23361.

It is an arithmetic number, because the mean of its divisors is an integer number (8898400).

Almost surely, 2^272660388 is an apocalyptic number.

272660388 is a gapful number since it is divisible by the number (28) 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 272660388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427123200).

272660388 is an abundant number, since it is smaller than the sum of its proper divisors (581586012).

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

272660388 is a wasteful number, since it uses less digits than its factorization.

272660388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22737 (or 22735 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 272660388 is about 16512.4313170411. The cubic root of 272660388 is about 648.4462993915.

The spelling of 272660388 in words is "two hundred seventy-two million, six hundred sixty thousand, three hundred eighty-eight".