72258246 has 12 divisors (see below), whose sum is σ = 156559572. Its totient is φ = 24086076.

The previous prime is 72258217. The next prime is 72258257. The reversal of 72258246 is 64285227.

72258246 is a `hidden beast` number, since 72 + 2 + 582 + 4 + 6 = 666.

It is a super-2 number, since 2×72258246² = 10442508229993032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72258246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2007156 + ... + 2007191.

It is an arithmetic number, because the mean of its divisors is an integer number (13046631).

Almost surely, 2^72258246 is an apocalyptic number.

72258246 is an abundant number, since it is smaller than the sum of its proper divisors (84301326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72258246 is a wasteful number, since it uses less digits than its factorization.

72258246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014355 (or 4014352 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 72258246 is about 8500.4850449842. The cubic root of 72258246 is about 416.5135538402.

The spelling of 72258246 in words is "seventy-two million, two hundred fifty-eight thousand, two hundred forty-six".