74420772 has 12 divisors (see below), whose sum is σ = 173648496. Its totient is φ = 24806920.

The previous prime is 74420761. The next prime is 74420779. The reversal of 74420772 is 27702447.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (74420779) 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, 3100854 + ... + 3100877.

It is an arithmetic number, because the mean of its divisors is an integer number (14470708).

Almost surely, 2^74420772 is an apocalyptic number.

It is an amenable number.

74420772 is an abundant number, since it is smaller than the sum of its proper divisors (99227724).

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

74420772 is a wasteful number, since it uses less digits than its factorization.

74420772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201738 (or 6201736 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 74420772 is about 8626.7474751496. The cubic root of 74420772 is about 420.6278817380.

The spelling of 74420772 in words is "seventy-four million, four hundred twenty thousand, seven hundred seventy-two".