2187298840 has 32 divisors (see below), whose sum is σ = 4925130480. Its totient is φ = 874260352.

The previous prime is 2187298819. The next prime is 2187298847. The reversal of 2187298840 is 488927812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187298847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35007 + ... + 74833.

Almost surely, 2^2187298840 is an apocalyptic number.

2187298840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187298840 is an abundant number, since it is smaller than the sum of its proper divisors (2737831640).

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

2187298840 is a wasteful number, since it uses less digits than its factorization.

2187298840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41211 (or 41207 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 2187298840 is about 46768.5667943759. The cubic root of 2187298840 is about 1298.0837329244.

The spelling of 2187298840 in words is "two billion, one hundred eighty-seven million, two hundred ninety-eight thousand, eight hundred forty".