77140272 has 40 divisors (see below), whose sum is σ = 217396800. Its totient is φ = 23375680.

The previous prime is 77140243. The next prime is 77140277. The reversal of 77140272 is 27204177.

It is not an unprimeable number, because it can be changed into a prime (77140277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72522 + ... + 73577.

It is an arithmetic number, because the mean of its divisors is an integer number (5434920).

Almost surely, 2^77140272 is an apocalyptic number.

It is an amenable number.

77140272 is an abundant number, since it is smaller than the sum of its proper divisors (140256528).

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

77140272 is a wasteful number, since it uses less digits than its factorization.

77140272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146121 (or 146115 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 77140272 is about 8782.9534895729. The cubic root of 77140272 is about 425.6902683669.

The spelling of 77140272 in words is "seventy-seven million, one hundred forty thousand, two hundred seventy-two".