272561520 has 400 divisors, whose sum is σ = 1100322432. Its totient is φ = 55319040.

The previous prime is 272561519. The next prime is 272561551. The reversal of 272561520 is 25165272.

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 polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6338619 + ... + 6338661.

Almost surely, 2^272561520 is an apocalyptic number.

272561520 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 272561520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550161216).

272561520 is an abundant number, since it is smaller than the sum of its proper divisors (827760912).

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

272561520 is a wasteful number, since it uses less digits than its factorization.

272561520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 272561520 is about 16509.4373011317. The cubic root of 272561520 is about 648.3679133087.

The spelling of 272561520 in words is "two hundred seventy-two million, five hundred sixty-one thousand, five hundred twenty".