7272783 has 24 divisors (see below), whose sum is σ = 12192128. Its totient is φ = 4091472.

The previous prime is 7272779. The next prime is 7272791. The reversal of 7272783 is 3872727.

It is not a de Polignac number, because 7272783 - 2² = 7272779 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

7272783 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3360 + ... + 5082.

Almost surely, 2^7272783 is an apocalyptic number.

7272783 is a deficient number, since it is larger than the sum of its proper divisors (4919345).

7272783 is a wasteful number, since it uses less digits than its factorization.

7272783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803 (or 1800 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 7272783 is about 2696.8097819461. The cubic root of 7272783 is about 193.7463560882.

The spelling of 7272783 in words is "seven million, two hundred seventy-two thousand, seven hundred eighty-three".