74163280 has 40 divisors (see below), whose sum is σ = 173426400. Its totient is φ = 29493888.

The previous prime is 74163277. The next prime is 74163283. The reversal of 74163280 is 8236147.

It is an interprime number because it is at equal distance from previous prime (74163277) and next prime (74163283).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74163283) 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, 11731 + ... + 16909.

It is an arithmetic number, because the mean of its divisors is an integer number (4335660).

Almost surely, 2^74163280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74163280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86713200).

74163280 is an abundant number, since it is smaller than the sum of its proper divisors (99263120).

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

74163280 is a wasteful number, since it uses less digits than its factorization.

74163280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371 (or 5365 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 74163280 is about 8611.8104948959. The cubic root of 74163280 is about 420.1422043033.

The spelling of 74163280 in words is "seventy-four million, one hundred sixty-three thousand, two hundred eighty".