72378246 has 8 divisors (see below), whose sum is σ = 144756504. Its totient is φ = 24126080.

The previous prime is 72378233. The next prime is 72378283. The reversal of 72378246 is 64287327.

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

72378246 is an admirable number.

It is a super-2 number, since 2×72378246² = 10477220988073032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6031515 + ... + 6031526.

It is an arithmetic number, because the mean of its divisors is an integer number (18094563).

Almost surely, 2^72378246 is an apocalyptic number.

72378246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72378246 is a wasteful number, since it uses less digits than its factorization.

72378246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12063046.

The product of its digits is 112896, while the sum is 39.

The square root of 72378246 is about 8507.5405376642. The cubic root of 72378246 is about 416.7439957454.

The spelling of 72378246 in words is "seventy-two million, three hundred seventy-eight thousand, two hundred forty-six".