28255356429 has 16 divisors (see below), whose sum is σ = 37730972160. Its totient is φ = 18808349760.

The previous prime is 28255356427. The next prime is 28255356433. The reversal of 28255356429 is 92465355282.

It is a happy number.

It is not a de Polignac number, because 28255356429 - 2¹ = 28255356427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255356427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8032179 + ... + 8035695.

It is an arithmetic number, because the mean of its divisors is an integer number (2358185760).

Almost surely, 2^28255356429 is an apocalyptic number.

It is an amenable number.

28255356429 is a deficient number, since it is larger than the sum of its proper divisors (9475615731).

28255356429 is a wasteful number, since it uses less digits than its factorization.

28255356429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6820.

The product of its digits is 5184000, while the sum is 51.

The spelling of 28255356429 in words is "twenty-eight billion, two hundred fifty-five million, three hundred fifty-six thousand, four hundred twenty-nine".