76143780 has 144 divisors (see below), whose sum is σ = 245831040. Its totient is φ = 19564416.

The previous prime is 76143779. The next prime is 76143787. The reversal of 76143780 is 8734167.

76143780 is a `hidden beast` number, since 7 + 614 + 37 + 8 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (76143787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 739209 + ... + 739311.

It is an arithmetic number, because the mean of its divisors is an integer number (1707160).

Almost surely, 2^76143780 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 76143780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122915520).

76143780 is an abundant number, since it is smaller than the sum of its proper divisors (169687260).

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

76143780 is a wasteful number, since it uses less digits than its factorization.

76143780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 76143780 is about 8726.0403391229. The cubic root of 76143780 is about 423.8493071348.

The spelling of 76143780 in words is "seventy-six million, one hundred forty-three thousand, seven hundred eighty".