74274336 has 72 divisors (see below), whose sum is σ = 218525580. Its totient is φ = 23901696.

The previous prime is 74274331. The next prime is 74274349. The reversal of 74274336 is 63347247.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71571600 + 2702736 = 8460^2 + 1644^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 74274336.

It is not an unprimeable number, because it can be changed into a prime (74274331) 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 11 ways as a sum of consecutive naturals, for example, 3906 + ... + 12798.

Almost surely, 2^74274336 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 74274336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109262790).

74274336 is an abundant number, since it is smaller than the sum of its proper divisors (144251244).

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

74274336 is a wasteful number, since it uses less digits than its factorization.

74274336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8938 (or 8927 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The square root of 74274336 is about 8618.2559720630. The cubic root of 74274336 is about 420.3518140633.

It can be divided in two parts, 742 and 74336, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 74274336 in words is "seventy-four million, two hundred seventy-four thousand, three hundred thirty-six".