74749272 has 96 divisors (see below), whose sum is σ = 214040400. Its totient is φ = 21620736.

The previous prime is 74749271. The next prime is 74749291. The reversal of 74749272 is 27294747.

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 (74749271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89754 + ... + 90582.

Almost surely, 2^74749272 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 74749272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107020200).

74749272 is an abundant number, since it is smaller than the sum of its proper divisors (139291128).

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

74749272 is a wasteful number, since it uses less digits than its factorization.

74749272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 864 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 74749272 is about 8645.7661314657. The cubic root of 74749272 is about 421.2458698125.

The spelling of 74749272 in words is "seventy-four million, seven hundred forty-nine thousand, two hundred seventy-two".