76505478 has 32 divisors (see below), whose sum is σ = 175219200. Its totient is φ = 21815040.

The previous prime is 76505449. The next prime is 76505479. The reversal of 76505478 is 87450567.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76505479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23638 + ... + 26678.

It is an arithmetic number, because the mean of its divisors is an integer number (5475600).

Almost surely, 2^76505478 is an apocalyptic number.

76505478 is an abundant number, since it is smaller than the sum of its proper divisors (98713722).

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

76505478 is a wasteful number, since it uses less digits than its factorization.

76505478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 76505478 is about 8746.7409930785. The cubic root of 76505478 is about 424.5193699272.

The spelling of 76505478 in words is "seventy-six million, five hundred five thousand, four hundred seventy-eight".