28140049357 has 24 divisors (see below), whose sum is σ = 34202845440. Its totient is φ = 22674812160.

The previous prime is 28140049319. The next prime is 28140049369. The reversal of 28140049357 is 75394004182.

It is not a de Polignac number, because 28140049357 - 2²³ = 28131660749 is a prime.

It is a super-2 number, since 2×28140049357² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28140049307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1835319 + ... + 1850587.

It is an arithmetic number, because the mean of its divisors is an integer number (1425118560).

Almost surely, 2^28140049357 is an apocalyptic number.

It is an amenable number.

28140049357 is a deficient number, since it is larger than the sum of its proper divisors (6062796083).

28140049357 is a wasteful number, since it uses less digits than its factorization.

28140049357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16221 (or 16204 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 28140049357 in words is "twenty-eight billion, one hundred forty million, forty-nine thousand, three hundred fifty-seven".