72992762 has 4 divisors (see below), whose sum is σ = 109489146. Its totient is φ = 36496380.

The previous prime is 72992741. The next prime is 72992767. The reversal of 72992762 is 26729927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26729927 = 7 ⋅3818561.

It can be written as a sum of positive squares in only one way, i.e., 63696361 + 9296401 = 7981^2 + 3049^2 .

It is not an unprimeable number, because it can be changed into a prime (72992767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18248189 + ... + 18248192.

Almost surely, 2^72992762 is an apocalyptic number.

72992762 is a deficient number, since it is larger than the sum of its proper divisors (36496384).

72992762 is a wasteful number, since it uses less digits than its factorization.

72992762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36496383.

The product of its digits is 190512, while the sum is 44.

The square root of 72992762 is about 8543.5801629059. The cubic root of 72992762 is about 417.9201063701.

The spelling of 72992762 in words is "seventy-two million, nine hundred ninety-two thousand, seven hundred sixty-two".