28356548390 has 16 divisors (see below), whose sum is σ = 51300886032. Its totient is φ = 11285041824.

The previous prime is 28356548387. The next prime is 28356548393. The reversal of 28356548390 is 9384565382.

It is an interprime number because it is at equal distance from previous prime (28356548387) and next prime (28356548393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28356548393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7195124 + ... + 7199063.

It is an arithmetic number, because the mean of its divisors is an integer number (3206305377).

Almost surely, 2^28356548390 is an apocalyptic number.

28356548390 is a deficient number, since it is larger than the sum of its proper divisors (22944337642).

28356548390 is a wasteful number, since it uses less digits than its factorization.

28356548390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14394391.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 28356548390 in words is "twenty-eight billion, three hundred fifty-six million, five hundred forty-eight thousand, three hundred ninety".