74561280 has 72 divisors (see below), whose sum is σ = 238142352. Its totient is φ = 19881984.

The previous prime is 74561273. The next prime is 74561287. The reversal of 74561280 is 8216547.

It is an interprime number because it is at equal distance from previous prime (74561273) and next prime (74561287).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74561287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5869 + ... + 13548.

Almost surely, 2^74561280 is an apocalyptic number.

It is an amenable number.

74561280 is an abundant number, since it is smaller than the sum of its proper divisors (163581072).

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

74561280 is a wasteful number, since it uses less digits than its factorization.

74561280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19441 (or 19427 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 74561280 is about 8634.8873762198. The cubic root of 74561280 is about 420.8924334430.

The spelling of 74561280 in words is "seventy-four million, five hundred sixty-one thousand, two hundred eighty".