2228040291 has 16 divisors (see below), whose sum is σ = 3102359040. Its totient is φ = 1419644160.

The previous prime is 2228040257. The next prime is 2228040319. The reversal of 2228040291 is 1920408222.

It is not a de Polignac number, because 2228040291 - 2¹³ = 2228032099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2228040691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78771 + ... + 103251.

It is an arithmetic number, because the mean of its divisors is an integer number (193897440).

Almost surely, 2^2228040291 is an apocalyptic number.

2228040291 is a deficient number, since it is larger than the sum of its proper divisors (874318749).

2228040291 is a wasteful number, since it uses less digits than its factorization.

2228040291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25826.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 2228040291 is about 47202.1216790093. The cubic root of 2228040291 is about 1306.0937364075.

The spelling of 2228040291 in words is "two billion, two hundred twenty-eight million, forty thousand, two hundred ninety-one".