74878122 has 16 divisors (see below), whose sum is σ = 163370592. Its totient is φ = 22690320.

The previous prime is 74878117. The next prime is 74878127. The reversal of 74878122 is 22187847.

It is an interprime number because it is at equal distance from previous prime (74878117) and next prime (74878127).

It is not an unprimeable number, because it can be changed into a prime (74878127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567193 + ... + 567324.

It is an arithmetic number, because the mean of its divisors is an integer number (10210662).

Almost surely, 2^74878122 is an apocalyptic number.

74878122 is an abundant number, since it is smaller than the sum of its proper divisors (88492470).

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

74878122 is a wasteful number, since it uses less digits than its factorization.

74878122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134533.

The product of its digits is 50176, while the sum is 39.

The square root of 74878122 is about 8653.2145472073. The cubic root of 74878122 is about 421.4877734971.

The spelling of 74878122 in words is "seventy-four million, eight hundred seventy-eight thousand, one hundred twenty-two".