74155472 has 40 divisors (see below), whose sum is σ = 151514112. Its totient is φ = 35107200.

The previous prime is 74155457. The next prime is 74155531. The reversal of 74155472 is 27455147.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21722 + ... + 24902.

Almost surely, 2^74155472 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 74155472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75757056).

74155472 is an abundant number, since it is smaller than the sum of its proper divisors (77358640).

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

74155472 is a wasteful number, since it uses less digits than its factorization.

74155472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3261 counting only the distinct ones).

The product of its digits is 39200, while the sum is 35.

The square root of 74155472 is about 8611.3571520406. The cubic root of 74155472 is about 420.1274594257.

The spelling of 74155472 in words is "seventy-four million, one hundred fifty-five thousand, four hundred seventy-two".