74447372 has 6 divisors (see below), whose sum is σ = 130282908. Its totient is φ = 37223684.

The previous prime is 74447357. The next prime is 74447383. The reversal of 74447372 is 27374447.

It is a happy number.

It is a super-2 number, since 2×74447372² = 11084822395412768, which contains 22 as substring.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9305918 + ... + 9305925.

It is an arithmetic number, because the mean of its divisors is an integer number (21713818).

Almost surely, 2^74447372 is an apocalyptic number.

It is an amenable number.

74447372 is a deficient number, since it is larger than the sum of its proper divisors (55835536).

74447372 is a wasteful number, since it uses less digits than its factorization.

74447372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18611847 (or 18611845 counting only the distinct ones).

The product of its digits is 131712, while the sum is 38.

The square root of 74447372 is about 8628.2890540361. The cubic root of 74447372 is about 420.6779903684.

The spelling of 74447372 in words is "seventy-four million, four hundred forty-seven thousand, three hundred seventy-two".