74031147 has 12 divisors (see below), whose sum is σ = 107973424. Its totient is φ = 48874320.

The previous prime is 74031143. The next prime is 74031233. The reversal of 74031147 is 74113047.

It is not a de Polignac number, because 74031147 - 2² = 74031143 is a prime.

It is a super-2 number, since 2×74031147² = 10961221452271218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74031147.

It is not an unprimeable number, because it can be changed into a prime (74031143) 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 11 ways as a sum of consecutive naturals, for example, 39004 + ... + 40857.

Almost surely, 2^74031147 is an apocalyptic number.

74031147 is a deficient number, since it is larger than the sum of its proper divisors (33942277).

74031147 is a wasteful number, since it uses less digits than its factorization.

74031147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79970 (or 79967 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 74031147 is about 8604.1354591847. The cubic root of 74031147 is about 419.8925405354.

The spelling of 74031147 in words is "seventy-four million, thirty-one thousand, one hundred forty-seven".