2187040828 has 24 divisors (see below), whose sum is σ = 4604297600. Its totient is φ = 887971248.

The previous prime is 2187040789. The next prime is 2187040831. The reversal of 2187040828 is 8280407812.

It is a super-3 number, since 3×2187040828³ (a number of 29 digits) contains 333 as substring.

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, 2054958 + ... + 2056021.

Almost surely, 2^2187040828 is an apocalyptic number.

2187040828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2187040828 is an abundant number, since it is smaller than the sum of its proper divisors (2417256772).

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

2187040828 is a wasteful number, since it uses less digits than its factorization.

2187040828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111009 (or 4111007 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 2187040828 is about 46765.8083218926. The cubic root of 2187040828 is about 1298.0326906154.

The spelling of 2187040828 in words is "two billion, one hundred eighty-seven million, forty thousand, eight hundred twenty-eight".