72440357 has 8 divisors (see below), whose sum is σ = 79343712. Its totient is φ = 65590000.

The previous prime is 72440353. The next prime is 72440387. The reversal of 72440357 is 75304427.

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

It is a cyclic number.

It is not a de Polignac number, because 72440357 - 2² = 72440353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72440353) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10358 + ... + 15879.

It is an arithmetic number, because the mean of its divisors is an integer number (9917964).

Almost surely, 2^72440357 is an apocalyptic number.

It is an amenable number.

72440357 is a deficient number, since it is larger than the sum of its proper divisors (6903355).

72440357 is a wasteful number, since it uses less digits than its factorization.

72440357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26499.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 72440357 is about 8511.1901047973. The cubic root of 72440357 is about 416.8631705302.

The spelling of 72440357 in words is "seventy-two million, four hundred forty thousand, three hundred fifty-seven".