72688246 has 8 divisors (see below), whose sum is σ = 110346264. Its totient is φ = 35906160.

The previous prime is 72688241. The next prime is 72688247. The reversal of 72688246 is 64288627.

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

It is a super-2 number, since 2×72688246² = 10567162213113032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72688241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218775 + ... + 219106.

It is an arithmetic number, because the mean of its divisors is an integer number (13793283).

Almost surely, 2^72688246 is an apocalyptic number.

72688246 is a deficient number, since it is larger than the sum of its proper divisors (37658018).

72688246 is a wasteful number, since it uses less digits than its factorization.

72688246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437966.

The product of its digits is 258048, while the sum is 43.

The square root of 72688246 is about 8525.7402024692. The cubic root of 72688246 is about 417.3381274535.

The spelling of 72688246 in words is "seventy-two million, six hundred eighty-eight thousand, two hundred forty-six".