74849778 has 32 divisors (see below), whose sum is σ = 175089600. Its totient is φ = 23636448.

The previous prime is 74849773. The next prime is 74849807. The reversal of 74849778 is 87794847.

74849778 is a `hidden beast` number, since 7 + 484 + 97 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (74849771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35451 + ... + 37502.

It is an arithmetic number, because the mean of its divisors is an integer number (5471550).

Almost surely, 2^74849778 is an apocalyptic number.

74849778 is an abundant number, since it is smaller than the sum of its proper divisors (100239822).

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

74849778 is a wasteful number, since it uses less digits than its factorization.

74849778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72983 (or 72977 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 74849778 is about 8651.5766193221. The cubic root of 74849778 is about 421.4345841415.

The spelling of 74849778 in words is "seventy-four million, eight hundred forty-nine thousand, seven hundred seventy-eight".