74407720 has 16 divisors (see below), whose sum is σ = 167417460. Its totient is φ = 29763072.

The previous prime is 74407717. The next prime is 74407727. The reversal of 74407720 is 2770447.

It can be written as a sum of positive squares in 2 ways, for example, as 71605444 + 2802276 = 8462^2 + 1674^2 .

It is not an unprimeable number, because it can be changed into a prime (74407727) 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, 930057 + ... + 930136.

Almost surely, 2^74407720 is an apocalyptic number.

It is an amenable number.

74407720 is an abundant number, since it is smaller than the sum of its proper divisors (93009740).

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

74407720 is a wasteful number, since it uses less digits than its factorization.

74407720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860204 (or 1860200 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 74407720 is about 8625.9909575654. The cubic root of 74407720 is about 420.6032902342.

The spelling of 74407720 in words is "seventy-four million, four hundred seven thousand, seven hundred twenty".