77543152 has 40 divisors (see below), whose sum is σ = 156434432. Its totient is φ = 37195200.

The previous prime is 77543131. The next prime is 77543159. The reversal of 77543152 is 25134577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77543159) 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, 62377 + ... + 63607.

Almost surely, 2^77543152 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 77543152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78217216).

77543152 is an abundant number, since it is smaller than the sum of its proper divisors (78891280).

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

77543152 is a wasteful number, since it uses less digits than its factorization.

77543152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397 (or 1391 counting only the distinct ones).

The product of its digits is 29400, while the sum is 34.

The square root of 77543152 is about 8805.8589586706. The cubic root of 77543152 is about 426.4300652181.

The spelling of 77543152 in words is "seventy-seven million, five hundred forty-three thousand, one hundred fifty-two".