72683278 has 4 divisors (see below), whose sum is σ = 109024920. Its totient is φ = 36341638.

The previous prime is 72683263. The next prime is 72683293. The reversal of 72683278 is 87238627.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (72683263) and next prime (72683293).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18170818 + ... + 18170821.

It is an arithmetic number, because the mean of its divisors is an integer number (27256230).

Almost surely, 2^72683278 is an apocalyptic number.

72683278 is a deficient number, since it is larger than the sum of its proper divisors (36341642).

72683278 is a wasteful number, since it uses less digits than its factorization.

72683278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36341641.

The product of its digits is 225792, while the sum is 43.

The square root of 72683278 is about 8525.4488444891. The cubic root of 72683278 is about 417.3286193456.

The spelling of 72683278 in words is "seventy-two million, six hundred eighty-three thousand, two hundred seventy-eight".