28990255142 has 8 divisors (see below), whose sum is σ = 46043346456. Its totient is φ = 13642472992.

The previous prime is 28990255139. The next prime is 28990255181. The reversal of 28990255142 is 24155209982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426327248 + ... + 426327315.

It is an arithmetic number, because the mean of its divisors is an integer number (5755418307).

Almost surely, 2^28990255142 is an apocalyptic number.

28990255142 is a deficient number, since it is larger than the sum of its proper divisors (17053091314).

28990255142 is a wasteful number, since it uses less digits than its factorization.

28990255142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852654582.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 28990255142 in words is "twenty-eight billion, nine hundred ninety million, two hundred fifty-five thousand, one hundred forty-two".