77401248 has 24 divisors (see below), whose sum is σ = 203178528. Its totient is φ = 25800384.

The previous prime is 77401237. The next prime is 77401267. The reversal of 77401248 is 84210477.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403036 + ... + 403227.

It is an arithmetic number, because the mean of its divisors is an integer number (8465772).

Almost surely, 2^77401248 is an apocalyptic number.

It is an amenable number.

77401248 is an abundant number, since it is smaller than the sum of its proper divisors (125777280).

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

77401248 is a wasteful number, since it uses less digits than its factorization.

77401248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806276 (or 806268 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 77401248 is about 8797.7979062945. The cubic root of 77401248 is about 426.1697839838.

The spelling of 77401248 in words is "seventy-seven million, four hundred one thousand, two hundred forty-eight".