272156440 has 64 divisors (see below), whose sum is σ = 637056000. Its totient is φ = 104526720.

The previous prime is 272156413. The next prime is 272156449. The reversal of 272156440 is 44651272.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272156449) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 171571 + ... + 173149.

It is an arithmetic number, because the mean of its divisors is an integer number (9954000).

Almost surely, 2^272156440 is an apocalyptic number.

272156440 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 272156440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318528000).

272156440 is an abundant number, since it is smaller than the sum of its proper divisors (364899560).

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

272156440 is a wasteful number, since it uses less digits than its factorization.

272156440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 272156440 is about 16497.1646048647. The cubic root of 272156440 is about 648.0465533287.

The spelling of 272156440 in words is "two hundred seventy-two million, one hundred fifty-six thousand, four hundred forty".