74728379 has 8 divisors (see below), whose sum is σ = 86317488. Its totient is φ = 63938560.

The previous prime is 74728373. The next prime is 74728399. The reversal of 74728379 is 97382747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74728379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74728373) 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, 199622 + ... + 199995.

It is an arithmetic number, because the mean of its divisors is an integer number (10789686).

Almost surely, 2^74728379 is an apocalyptic number.

74728379 is a deficient number, since it is larger than the sum of its proper divisors (11589109).

74728379 is a wasteful number, since it uses less digits than its factorization.

74728379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399645.

The product of its digits is 592704, while the sum is 47.

The square root of 74728379 is about 8644.5577677519. The cubic root of 74728379 is about 421.2066189951.

It can be divided in two parts, 7472 and 8379, that added together give a palindrome (15851).

The spelling of 74728379 in words is "seventy-four million, seven hundred twenty-eight thousand, three hundred seventy-nine".