28143225090 has 64 divisors (see below), whose sum is σ = 75072355200. Its totient is φ = 7502484672.

The previous prime is 28143225037. The next prime is 28143225107. The reversal of 28143225090 is 9052234182.

It is a happy number.

28143225090 is a `hidden beast` number, since 2 + 8 + 143 + 2 + 2 + 509 + 0 = 666.

It is a super-2 number, since 2×28143225090² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 940804 + ... + 970256.

It is an arithmetic number, because the mean of its divisors is an integer number (1173005550).

Almost surely, 2^28143225090 is an apocalyptic number.

28143225090 is an abundant number, since it is smaller than the sum of its proper divisors (46929130110).

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

28143225090 is a wasteful number, since it uses less digits than its factorization.

28143225090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33008 (or 33002 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 28143225090 in words is "twenty-eight billion, one hundred forty-three million, two hundred twenty-five thousand, ninety".