72242678 has 8 divisors (see below), whose sum is σ = 113075568. Its totient is φ = 34550824.

The previous prime is 72242659. The next prime is 72242689. The reversal of 72242678 is 87624227.

It is a happy number.

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

It is a super-2 number, since 2×72242678² = 10438009049223368, which contains 22 as substring.

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, 785201 + ... + 785292.

It is an arithmetic number, because the mean of its divisors is an integer number (14134446).

Almost surely, 2^72242678 is an apocalyptic number.

72242678 is a deficient number, since it is larger than the sum of its proper divisors (40832890).

72242678 is a wasteful number, since it uses less digits than its factorization.

72242678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570518.

The product of its digits is 75264, while the sum is 38.

The square root of 72242678 is about 8499.5692832049. The cubic root of 72242678 is about 416.4836391518.

The spelling of 72242678 in words is "seventy-two million, two hundred forty-two thousand, six hundred seventy-eight".