74731870 has 16 divisors (see below), whose sum is σ = 134745840. Its totient is φ = 29841984.

The previous prime is 74731861. The next prime is 74731871. The reversal of 74731870 is 7813747.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74731871) 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, 154 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (8421615).

Almost surely, 2^74731870 is an apocalyptic number.

74731870 is a deficient number, since it is larger than the sum of its proper divisors (60013970).

74731870 is a wasteful number, since it uses less digits than its factorization.

74731870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12699.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 74731870 is about 8644.7596843406. The cubic root of 74731870 is about 421.2131779019.

The spelling of 74731870 in words is "seventy-four million, seven hundred thirty-one thousand, eight hundred seventy".