2724784397 has 10 divisors (see below), whose sum is σ = 2793160398. Its totient is φ = 2658078024.

The previous prime is 2724784393. The next prime is 2724784409. The reversal of 2724784397 is 7934874272.

It can be written as a sum of positive squares in only one way, i.e., 2311109476 + 413674921 = 48074^2 + 20339^2 .

It is not a de Polignac number, because 2724784397 - 2² = 2724784393 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 (2724784393) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3418403 + ... + 3419199.

Almost surely, 2^2724784397 is an apocalyptic number.

It is an amenable number.

2724784397 is a deficient number, since it is larger than the sum of its proper divisors (68376001).

2724784397 is an frugal number, since it uses more digits than its factorization.

2724784397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 840 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 53.

The square root of 2724784397 is about 52199.4674014975. The cubic root of 2724784397 is about 1396.7243822321.

The spelling of 2724784397 in words is "two billion, seven hundred twenty-four million, seven hundred eighty-four thousand, three hundred ninety-seven".