2772431 has 4 divisors (see below), whose sum is σ = 2775864. Its totient is φ = 2769000.

The previous prime is 2772421. The next prime is 2772433. The reversal of 2772431 is 1342772.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2772431 is a prime.

It is a super-2 number, since 2×2772431² = 15372747299522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2772431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236 + ... + 2366.

It is an arithmetic number, because the mean of its divisors is an integer number (693966).

2^2772431 is an apocalyptic number.

2772431 is a deficient number, since it is larger than the sum of its proper divisors (3433).

2772431 is a wasteful number, since it uses less digits than its factorization.

2772431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432.

The product of its digits is 2352, while the sum is 26.

The square root of 2772431 is about 1665.0618607127. The cubic root of 2772431 is about 140.4818600120.

The spelling of 2772431 in words is "two million, seven hundred seventy-two thousand, four hundred thirty-one".