2267908421 has 4 divisors (see below), whose sum is σ = 2270289132. Its totient is φ = 2265527712.

The previous prime is 2267908387. The next prime is 2267908471. The reversal of 2267908421 is 1248097622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1740057796 + 527850625 = 41714^2 + 22975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2267908421 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 (2267908471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188926 + ... + 1190831.

It is an arithmetic number, because the mean of its divisors is an integer number (567572283).

Almost surely, 2^2267908421 is an apocalyptic number.

It is an amenable number.

2267908421 is a deficient number, since it is larger than the sum of its proper divisors (2380711).

2267908421 is an equidigital number, since it uses as much as digits as its factorization.

2267908421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380710.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 2267908421 is about 47622.5621003322. The cubic root of 2267908421 is about 1313.8380577785.

The spelling of 2267908421 in words is "two billion, two hundred sixty-seven million, nine hundred eight thousand, four hundred twenty-one".