77748272 has 40 divisors (see below), whose sum is σ = 172655616. Its totient is φ = 33224256.

The previous prime is 77748227. The next prime is 77748277. The reversal of 77748272 is 27284777.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (77748277) 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, 48833 + ... + 50399.

Almost surely, 2^77748272 is an apocalyptic number.

It is an amenable number.

77748272 is an abundant number, since it is smaller than the sum of its proper divisors (94907344).

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

77748272 is a wasteful number, since it uses less digits than its factorization.

77748272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 2019 counting only the distinct ones).

The product of its digits is 307328, while the sum is 44.

The square root of 77748272 is about 8817.4980578393. The cubic root of 77748272 is about 426.8057370007.

The spelling of 77748272 in words is "seventy-seven million, seven hundred forty-eight thousand, two hundred seventy-two".