72427238 has 16 divisors (see below), whose sum is σ = 119853216. Its totient is φ = 32612160.

The previous prime is 72427219. The next prime is 72427291. The reversal of 72427238 is 83272427.

It is a super-3 number, since 3×72427238³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72427198 and 72427207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32906 + ... + 35037.

It is an arithmetic number, because the mean of its divisors is an integer number (7490826).

Almost surely, 2^72427238 is an apocalyptic number.

72427238 is a deficient number, since it is larger than the sum of its proper divisors (47425978).

72427238 is a wasteful number, since it uses less digits than its factorization.

72427238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67999.

The product of its digits is 37632, while the sum is 35.

The square root of 72427238 is about 8510.4193786205. The cubic root of 72427238 is about 416.8380042723.

The spelling of 72427238 in words is "seventy-two million, four hundred twenty-seven thousand, two hundred thirty-eight".