74288272 has 20 divisors (see below), whose sum is σ = 144973360. Its totient is φ = 36875808.

The previous prime is 74288243. The next prime is 74288273. The reversal of 74288272 is 27288247.

It is not an unprimeable number, because it can be changed into a prime (74288273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14478 + ... + 18925.

It is an arithmetic number, because the mean of its divisors is an integer number (7248668).

Almost surely, 2^74288272 is an apocalyptic number.

It is an amenable number.

74288272 is a deficient number, since it is larger than the sum of its proper divisors (70685088).

74288272 is a wasteful number, since it uses less digits than its factorization.

74288272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33550 (or 33544 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 74288272 is about 8619.0644503914. The cubic root of 74288272 is about 420.3781024462.

It can be divided in two parts, 7428 and 8272, that multiplied together give a palindrome (61444416).

The spelling of 74288272 in words is "seventy-four million, two hundred eighty-eight thousand, two hundred seventy-two".