72278498 has 8 divisors (see below), whose sum is σ = 112156380. Its totient is φ = 34893040.

The previous prime is 72278491. The next prime is 72278513. The reversal of 72278498 is 89487227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69772609 + 2505889 = 8353^2 + 1583^2 .

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 (72278491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623033 + ... + 623148.

Almost surely, 2^72278498 is an apocalyptic number.

72278498 is a deficient number, since it is larger than the sum of its proper divisors (39877882).

72278498 is a wasteful number, since it uses less digits than its factorization.

72278498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246212.

The product of its digits is 451584, while the sum is 47.

The square root of 72278498 is about 8501.6761876703. The cubic root of 72278498 is about 416.5524626385.

The spelling of 72278498 in words is "seventy-two million, two hundred seventy-eight thousand, four hundred ninety-eight".