77250474 has 24 divisors (see below), whose sum is σ = 191287200. Its totient is φ = 22071528.

The previous prime is 77250449. The next prime is 77250479. The reversal of 77250474 is 47405277.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77250479) 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, 306424 + ... + 306675.

It is an arithmetic number, because the mean of its divisors is an integer number (7970300).

Almost surely, 2^77250474 is an apocalyptic number.

77250474 is an abundant number, since it is smaller than the sum of its proper divisors (114036726).

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

77250474 is a wasteful number, since it uses less digits than its factorization.

77250474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613114 (or 613111 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 77250474 is about 8789.2248805000. The cubic root of 77250474 is about 425.8928845280.

The spelling of 77250474 in words is "seventy-seven million, two hundred fifty thousand, four hundred seventy-four".