28057762240 has 28 divisors (see below), whose sum is σ = 66812547096. Its totient is φ = 11223104768.

The previous prime is 28057762231. The next prime is 28057762259. The reversal of 28057762240 is 4226775082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43839934 + ... + 43840573.

Almost surely, 2^28057762240 is an apocalyptic number.

28057762240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28057762240 is an abundant number, since it is smaller than the sum of its proper divisors (38754784856).

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

28057762240 is an equidigital number, since it uses as much as digits as its factorization.

28057762240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87680524 (or 87680514 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 28057762240 in words is "twenty-eight billion, fifty-seven million, seven hundred sixty-two thousand, two hundred forty".