272987640 has 48 divisors (see below), whose sum is σ = 887211000. Its totient is φ = 72796608.

The previous prime is 272987633. The next prime is 272987641. The reversal of 272987640 is 46789272.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272987641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378790 + ... + 379509.

Almost surely, 2^272987640 is an apocalyptic number.

272987640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

272987640 is an abundant number, since it is smaller than the sum of its proper divisors (614223360).

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

272987640 is a wasteful number, since it uses less digits than its factorization.

272987640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758316 (or 758309 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 272987640 is about 16522.3376070095. The cubic root of 272987640 is about 648.7056213865.

The spelling of 272987640 in words is "two hundred seventy-two million, nine hundred eighty-seven thousand, six hundred forty".