77028012 has 72 divisors (see below), whose sum is σ = 208222560. Its totient is φ = 23950080.

The previous prime is 77027999. The next prime is 77028013. The reversal of 77028012 is 21082077.

It is not an unprimeable number, because it can be changed into a prime (77028013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32814 + ... + 35082.

It is an arithmetic number, because the mean of its divisors is an integer number (2891980).

Almost surely, 2^77028012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77028012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104111280).

77028012 is an abundant number, since it is smaller than the sum of its proper divisors (131194548).

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

77028012 is a wasteful number, since it uses less digits than its factorization.

77028012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 77028012 is about 8776.5603740873. The cubic root of 77028012 is about 425.4836698828.

It can be divided in two parts, 770 and 28012, that added together give a palindrome (28782).

The spelling of 77028012 in words is "seventy-seven million, twenty-eight thousand, twelve".