74220490 has 8 divisors (see below), whose sum is σ = 133596900. Its totient is φ = 29688192.

The previous prime is 74220481. The next prime is 74220491. The reversal of 74220490 is 9402247.

It can be written as a sum of positive squares in 2 ways, for example, as 69772609 + 4447881 = 8353^2 + 2109^2 .

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

It is a super-2 number, since 2×74220490² = 11017362271680200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74220491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3711015 + ... + 3711034.

Almost surely, 2^74220490 is an apocalyptic number.

74220490 is a deficient number, since it is larger than the sum of its proper divisors (59376410).

74220490 is a wasteful number, since it uses less digits than its factorization.

74220490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7422056.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 74220490 is about 8615.1314557585. The cubic root of 74220490 is about 420.2502099433.

The spelling of 74220490 in words is "seventy-four million, two hundred twenty thousand, four hundred ninety".