74123536 has 40 divisors (see below), whose sum is σ = 157322520. Its totient is φ = 33675264.

The previous prime is 74123527. The next prime is 74123537. The reversal of 74123536 is 63532147.

It can be written as a sum of positive squares in 4 ways, for example, as 2822400 + 71301136 = 1680^2 + 8444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74123498 and 74123507.

It is not an unprimeable number, because it can be changed into a prime (74123537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3190 + ... + 12586.

It is an arithmetic number, because the mean of its divisors is an integer number (3933063).

Almost surely, 2^74123536 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 74123536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78661260).

74123536 is an abundant number, since it is smaller than the sum of its proper divisors (83198984).

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

74123536 is a wasteful number, since it uses less digits than its factorization.

74123536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451 (or 9445 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 74123536 is about 8609.5026569483. The cubic root of 74123536 is about 420.0671396824.

The spelling of 74123536 in words is "seventy-four million, one hundred twenty-three thousand, five hundred thirty-six".