74729472 has 48 divisors (see below), whose sum is σ = 199246320. Its totient is φ = 24907776.

The previous prime is 74729471. The next prime is 74729509. The reversal of 74729472 is 27492747.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is not an unprimeable number, because it can be changed into a prime (74729471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63 + ... + 12225.

It is an arithmetic number, because the mean of its divisors is an integer number (4150965).

Almost surely, 2^74729472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74729472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99623160).

74729472 is an abundant number, since it is smaller than the sum of its proper divisors (124516848).

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

74729472 is a wasteful number, since it uses less digits than its factorization.

74729472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12188 (or 12168 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 74729472 is about 8644.6209864863. The cubic root of 74729472 is about 421.2086725505.

The spelling of 74729472 in words is "seventy-four million, seven hundred twenty-nine thousand, four hundred seventy-two".