72808742 has 8 divisors (see below), whose sum is σ = 109586736. Its totient is φ = 36279832.

The previous prime is 72808717. The next prime is 72808753. The reversal of 72808742 is 24780827.

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

It is a super-2 number, since 2×72808742² = 10602225823245128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72808696 and 72808705.

It is a congruent number.

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, 61538 + ... + 62709.

It is an arithmetic number, because the mean of its divisors is an integer number (13698342).

Almost surely, 2^72808742 is an apocalyptic number.

72808742 is a deficient number, since it is larger than the sum of its proper divisors (36777994).

72808742 is a wasteful number, since it uses less digits than its factorization.

72808742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124542.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 72808742 is about 8532.8038768039. The cubic root of 72808742 is about 417.5686086108.

The spelling of 72808742 in words is "seventy-two million, eight hundred eight thousand, seven hundred forty-two".