74780450 has 24 divisors (see below), whose sum is σ = 147275172. Its totient is φ = 28152320.

The previous prime is 74780437. The next prime is 74780477. The reversal of 74780450 is 5408747.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 60575089 + 14205361 = 7783^2 + 3769^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74780450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43139 + ... + 44838.

Almost surely, 2^74780450 is an apocalyptic number.

74780450 is a deficient number, since it is larger than the sum of its proper divisors (72494722).

74780450 is a wasteful number, since it uses less digits than its factorization.

74780450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88006 (or 88001 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 74780450 is about 8647.5690225635. The cubic root of 74780450 is about 421.3044290367.

The spelling of 74780450 in words is "seventy-four million, seven hundred eighty thousand, four hundred fifty".