77769152 has 28 divisors (see below), whose sum is σ = 163403280. Its totient is φ = 36596736.

The previous prime is 77769151. The next prime is 77769191. The reversal of 77769152 is 25196777.

It is a super-3 number, since 3×77769152³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77769151) 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, 34652 + ... + 36827.

Almost surely, 2^77769152 is an apocalyptic number.

It is an amenable number.

77769152 is an abundant number, since it is smaller than the sum of its proper divisors (85634128).

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

77769152 is a wasteful number, since it uses less digits than its factorization.

77769152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71508 (or 71498 counting only the distinct ones).

The product of its digits is 185220, while the sum is 44.

The square root of 77769152 is about 8818.6819876895. The cubic root of 77769152 is about 426.8439410915.

The spelling of 77769152 in words is "seventy-seven million, seven hundred sixty-nine thousand, one hundred fifty-two".