77761028 has 24 divisors (see below), whose sum is σ = 139812288. Its totient is φ = 37822176.

The previous prime is 77761027. The next prime is 77761049. The reversal of 77761028 is 82016777.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77760982 and 77761000.

It is not an unprimeable number, because it can be changed into a prime (77761027) 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, 49625 + ... + 51167.

It is an arithmetic number, because the mean of its divisors is an integer number (5825512).

Almost surely, 2^77761028 is an apocalyptic number.

It is an amenable number.

77761028 is a deficient number, since it is larger than the sum of its proper divisors (62051260).

77761028 is a wasteful number, since it uses less digits than its factorization.

77761028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 77761028 is about 8818.2213626105. The cubic root of 77761028 is about 426.8290774391.

The spelling of 77761028 in words is "seventy-seven million, seven hundred sixty-one thousand, twenty-eight".