77256036 has 144 divisors (see below), whose sum is σ = 235435200. Its totient is φ = 21047040.

The previous prime is 77256031. The next prime is 77256059. The reversal of 77256036 is 63065277.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77256031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 221190 + ... + 221538.

Almost surely, 2^77256036 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 77256036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117717600).

77256036 is an abundant number, since it is smaller than the sum of its proper divisors (158179164).

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

77256036 is a wasteful number, since it uses less digits than its factorization.

77256036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 77256036 is about 8789.5412849591. The cubic root of 77256036 is about 425.9031056492.

The spelling of 77256036 in words is "seventy-seven million, two hundred fifty-six thousand, thirty-six".