72868090 has 8 divisors (see below), whose sum is σ = 131162580. Its totient is φ = 29147232.

The previous prime is 72868087. The next prime is 72868091. The reversal of 72868090 is 9086827.

It can be written as a sum of positive squares in 2 ways, for example, as 66732561 + 6135529 = 8169^2 + 2477^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72868091) 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, 3643395 + ... + 3643414.

Almost surely, 2^72868090 is an apocalyptic number.

72868090 is a deficient number, since it is larger than the sum of its proper divisors (58294490).

72868090 is a wasteful number, since it uses less digits than its factorization.

72868090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286816.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 72868090 is about 8536.2808060654. The cubic root of 72868090 is about 417.6820342368.

It can be divided in two parts, 7286 and 8090, that added together give a square (15376 = 124²).

The spelling of 72868090 in words is "seventy-two million, eight hundred sixty-eight thousand, ninety".