77140532 has 48 divisors (see below), whose sum is σ = 164451840. Its totient is φ = 30925152.

The previous prime is 77140501. The next prime is 77140541. The reversal of 77140532 is 23504177.

It is a junction number, because it is equal to n+sod(n) for n = 77140495 and 77140504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43283 + ... + 45029.

It is an arithmetic number, because the mean of its divisors is an integer number (3426080).

Almost surely, 2^77140532 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 77140532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82225920).

77140532 is an abundant number, since it is smaller than the sum of its proper divisors (87311308).

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

77140532 is a wasteful number, since it uses less digits than its factorization.

77140532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1858 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 77140532 is about 8782.9682909595. The cubic root of 77140532 is about 425.6907466270.

The spelling of 77140532 in words is "seventy-seven million, one hundred forty thousand, five hundred thirty-two".