74499280 has 20 divisors (see below), whose sum is σ = 173211012. Its totient is φ = 29799680.

The previous prime is 74499259. The next prime is 74499283. The reversal of 74499280 is 8299447.

It can be written as a sum of positive squares in 2 ways, for example, as 59351616 + 15147664 = 7704^2 + 3892^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74499283) 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, 465541 + ... + 465700.

Almost surely, 2^74499280 is an apocalyptic number.

It is an amenable number.

74499280 is an abundant number, since it is smaller than the sum of its proper divisors (98711732).

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

74499280 is a wasteful number, since it uses less digits than its factorization.

74499280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931254 (or 931248 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 74499280 is about 8631.2965422351. The cubic root of 74499280 is about 420.7757394197.

The spelling of 74499280 in words is "seventy-four million, four hundred ninety-nine thousand, two hundred eighty".