72947794 has 8 divisors (see below), whose sum is σ = 112379148. Its totient is φ = 35488080.

The previous prime is 72947779. The next prime is 72947801. The reversal of 72947794 is 49774927.

It can be written as a sum of positive squares in 2 ways, for example, as 67486225 + 5461569 = 8215^2 + 2337^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492817 + ... + 492964.

Almost surely, 2^72947794 is an apocalyptic number.

72947794 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72947794 is a deficient number, since it is larger than the sum of its proper divisors (39431354).

72947794 is a wasteful number, since it uses less digits than its factorization.

72947794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985820.

The product of its digits is 889056, while the sum is 49.

The square root of 72947794 is about 8540.9480738382. The cubic root of 72947794 is about 417.8342673026.

The spelling of 72947794 in words is "seventy-two million, nine hundred forty-seven thousand, seven hundred ninety-four".