74729470 has 64 divisors (see below), whose sum is σ = 148599360. Its totient is φ = 26956800.

The previous prime is 74729449. The next prime is 74729471. The reversal of 74729470 is 7492747.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 (74729471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412780 + ... + 412960.

It is an arithmetic number, because the mean of its divisors is an integer number (2321865).

Almost surely, 2^74729470 is an apocalyptic number.

74729470 is a deficient number, since it is larger than the sum of its proper divisors (73869890).

74729470 is a wasteful number, since it uses less digits than its factorization.

74729470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 74729470 is about 8644.6208708075. The cubic root of 74729470 is about 421.2086687928.

The spelling of 74729470 in words is "seventy-four million, seven hundred twenty-nine thousand, four hundred seventy".