74120634 has 72 divisors (see below), whose sum is σ = 196691040. Its totient is φ = 20058192.

The previous prime is 74120633. The next prime is 74120671. The reversal of 74120634 is 43602147.

74120634 is a `hidden beast` number, since 7 + 4 + 1 + 20 + 634 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 74120598 and 74120607.

It is not an unprimeable number, because it can be changed into a prime (74120633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14547 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (2731820).

Almost surely, 2^74120634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74120634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98345520).

74120634 is an abundant number, since it is smaller than the sum of its proper divisors (122570406).

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

74120634 is a wasteful number, since it uses less digits than its factorization.

74120634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4464 (or 4454 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 74120634 is about 8609.3341205926. The cubic root of 74120634 is about 420.0616576146.

The spelling of 74120634 in words is "seventy-four million, one hundred twenty thousand, six hundred thirty-four".