77271472 has 10 divisors (see below), whose sum is σ = 149713508. Its totient is φ = 38635728.

The previous prime is 77271451. The next prime is 77271479. The reversal of 77271472 is 27417277.

It is not an unprimeable number, because it can be changed into a prime (77271479) 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 as a sum of consecutive naturals, namely, 2414718 + ... + 2414749.

Almost surely, 2^77271472 is an apocalyptic number.

It is an amenable number.

77271472 is a deficient number, since it is larger than the sum of its proper divisors (72442036).

77271472 is a wasteful number, since it uses less digits than its factorization.

77271472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4829475 (or 4829469 counting only the distinct ones).

The product of its digits is 38416, while the sum is 37.

The square root of 77271472 is about 8790.4193301571. The cubic root of 77271472 is about 425.9314693555.

The spelling of 77271472 in words is "seventy-seven million, two hundred seventy-one thousand, four hundred seventy-two".