2221467540 has 24 divisors (see below), whose sum is σ = 6220109280. Its totient is φ = 592391328.

The previous prime is 2221467499. The next prime is 2221467557. The reversal of 2221467540 is 457641222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18512170 + ... + 18512289.

It is an arithmetic number, because the mean of its divisors is an integer number (259171220).

Almost surely, 2^2221467540 is an apocalyptic number.

2221467540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221467540 is an abundant number, since it is smaller than the sum of its proper divisors (3998641740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221467540 is a wasteful number, since it uses less digits than its factorization.

2221467540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37024471 (or 37024469 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 2221467540 is about 47132.4467856274. The cubic root of 2221467540 is about 1304.8081396132.

The spelling of 2221467540 in words is "two billion, two hundred twenty-one million, four hundred sixty-seven thousand, five hundred forty".