72440994 has 8 divisors (see below), whose sum is σ = 144882000. Its totient is φ = 24146996.

The previous prime is 72440933. The next prime is 72441001. The reversal of 72440994 is 49904427.

It is a happy number.

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

72440994 is an admirable number.

It is a super-2 number, since 2×72440994² = 10495395223416072, which contains 22 as substring.

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, 6036744 + ... + 6036755.

It is an arithmetic number, because the mean of its divisors is an integer number (18110250).

Almost surely, 2^72440994 is an apocalyptic number.

72440994 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.

72440994 is a wasteful number, since it uses less digits than its factorization.

72440994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12073504.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 72440994 is about 8511.2275260388. The cubic root of 72440994 is about 416.8643924138.

The spelling of 72440994 in words is "seventy-two million, four hundred forty thousand, nine hundred ninety-four".