72277249 has 8 divisors (see below), whose sum is σ = 78950592. Its totient is φ = 65621040.

The previous prime is 72277241. The next prime is 72277259. The reversal of 72277249 is 94277227.

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 72277249 - 2³ = 72277241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72277241) 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, 5532 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (9868824).

Almost surely, 2^72277249 is an apocalyptic number.

It is an amenable number.

72277249 is a deficient number, since it is larger than the sum of its proper divisors (6673343).

72277249 is a wasteful number, since it uses less digits than its factorization.

72277249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567.

The product of its digits is 98784, while the sum is 40.

The square root of 72277249 is about 8501.6027312501. The cubic root of 72277249 is about 416.5500632296.

The spelling of 72277249 in words is "seventy-two million, two hundred seventy-seven thousand, two hundred forty-nine".