74820072 has 16 divisors (see below), whose sum is σ = 187050240. Its totient is φ = 24940016.

The previous prime is 74820049. The next prime is 74820079. The reversal of 74820072 is 27002847.

It is not an unprimeable number, because it can be changed into a prime (74820079) 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, 1558728 + ... + 1558775.

It is an arithmetic number, because the mean of its divisors is an integer number (11690640).

Almost surely, 2^74820072 is an apocalyptic number.

It is an amenable number.

74820072 is an abundant number, since it is smaller than the sum of its proper divisors (112230168).

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

74820072 is a wasteful number, since it uses less digits than its factorization.

74820072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117512 (or 3117508 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 74820072 is about 8649.8596520406. The cubic root of 74820072 is about 421.3788244914.

Subtracting from 74820072 its reverse (27002847), we obtain a square (47817225 = 6915²).

The spelling of 74820072 in words is "seventy-four million, eight hundred twenty thousand, seventy-two".