72244447 has 8 divisors (see below), whose sum is σ = 78888960. Its totient is φ = 65612760.

The previous prime is 72244427. The next prime is 72244457. The reversal of 72244447 is 74444227.

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 72244447 - 2²³ = 63855839 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 (72244427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11554 + ... + 16672.

It is an arithmetic number, because the mean of its divisors is an integer number (9861120).

Almost surely, 2^72244447 is an apocalyptic number.

72244447 is a deficient number, since it is larger than the sum of its proper divisors (6644513).

72244447 is a wasteful number, since it uses less digits than its factorization.

72244447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413.

The product of its digits is 50176, while the sum is 34.

The square root of 72244447 is about 8499.6733466646. The cubic root of 72244447 is about 416.4870385899.

The spelling of 72244447 in words is "seventy-two million, two hundred forty-four thousand, four hundred forty-seven".