74490531 has 8 divisors (see below), whose sum is σ = 102745680. Its totient is φ = 47947872.

The previous prime is 74490529. The next prime is 74490541. The reversal of 74490531 is 13509447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74490531 - 2¹ = 74490529 is a prime.

It is a super-2 number, since 2×74490531² = 11097678417323922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74490492 and 74490501.

It is not an unprimeable number, because it can be changed into a prime (74490541) 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 7 ways as a sum of consecutive naturals, for example, 428020 + ... + 428193.

It is an arithmetic number, because the mean of its divisors is an integer number (12843210).

Almost surely, 2^74490531 is an apocalyptic number.

74490531 is a deficient number, since it is larger than the sum of its proper divisors (28255149).

74490531 is a wasteful number, since it uses less digits than its factorization.

74490531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856245.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 74490531 is about 8630.7897089432. The cubic root of 74490531 is about 420.7592671752.

Adding to 74490531 its reverse (13509447), we get a palindrome (87999978).

The spelling of 74490531 in words is "seventy-four million, four hundred ninety thousand, five hundred thirty-one".