77051320 has 16 divisors (see below), whose sum is σ = 173365560. Its totient is φ = 30820512.

The previous prime is 77051297. The next prime is 77051321. The reversal of 77051320 is 2315077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77051321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963102 + ... + 963181.

Almost surely, 2^77051320 is an apocalyptic number.

It is an amenable number.

77051320 is an abundant number, since it is smaller than the sum of its proper divisors (96314240).

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

77051320 is a wasteful number, since it uses less digits than its factorization.

77051320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926294 (or 1926290 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 77051320 is about 8777.8881287016. Note that the first 3 decimals coincide. The cubic root of 77051320 is about 425.5265814289.

Adding to 77051320 its reverse (2315077), we get a palindrome (79366397).

It can be divided in two parts, 7705 and 1320, that added together give a square (9025 = 95²).

The spelling of 77051320 in words is "seventy-seven million, fifty-one thousand, three hundred twenty".