74487538 has 4 divisors (see below), whose sum is σ = 111731310. Its totient is φ = 37243768.

The previous prime is 74487503. The next prime is 74487541. The reversal of 74487538 is 83578447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50310649 + 24176889 = 7093^2 + 4917^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18621883 + ... + 18621886.

Almost surely, 2^74487538 is an apocalyptic number.

74487538 is a deficient number, since it is larger than the sum of its proper divisors (37243772).

74487538 is a wasteful number, since it uses less digits than its factorization.

74487538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37243771.

The product of its digits is 752640, while the sum is 46.

The square root of 74487538 is about 8630.6163163473. The cubic root of 74487538 is about 420.7536317862.

Subtracting 74487538 from its reverse (83578447), we obtain a palindrome (9090909).

The spelling of 74487538 in words is "seventy-four million, four hundred eighty-seven thousand, five hundred thirty-eight".