74384450 has 72 divisors (see below), whose sum is σ = 163122372. Its totient is φ = 25159680.

The previous prime is 74384447. The next prime is 74384473. The reversal of 74384450 is 5448347.

It can be written as a sum of positive squares in 6 ways, for example, as 5112121 + 69272329 = 2261^2 + 8323^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 74384450.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 237494 + ... + 237806.

Almost surely, 2^74384450 is an apocalyptic number.

74384450 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

74384450 is an abundant number, since it is smaller than the sum of its proper divisors (88737922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74384450 is a wasteful number, since it uses less digits than its factorization.

74384450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 74384450 is about 8624.6420215566. The cubic root of 74384450 is about 420.5594396811.

The spelling of 74384450 in words is "seventy-four million, three hundred eighty-four thousand, four hundred fifty".