74347878 has 16 divisors (see below), whose sum is σ = 162213696. Its totient is φ = 22529640.

The previous prime is 74347859. The next prime is 74347879. The reversal of 74347878 is 87874347.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74347879) 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, 563176 + ... + 563307.

It is an arithmetic number, because the mean of its divisors is an integer number (10138356).

Almost surely, 2^74347878 is an apocalyptic number.

74347878 is an abundant number, since it is smaller than the sum of its proper divisors (87865818).

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

74347878 is a wasteful number, since it uses less digits than its factorization.

74347878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126499.

The product of its digits is 1053696, while the sum is 48.

The square root of 74347878 is about 8622.5215569461. The cubic root of 74347878 is about 420.4905040312.

The spelling of 74347878 in words is "seventy-four million, three hundred forty-seven thousand, eight hundred seventy-eight".