28542269308 has 36 divisors (see below), whose sum is σ = 59674296360. Its totient is φ = 11901792672.

The previous prime is 28542269293. The next prime is 28542269309. The reversal of 28542269308 is 80396224582.

It is a super-2 number, since 2×28542269308² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28542269309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1960638 + ... + 1975141.

Almost surely, 2^28542269308 is an apocalyptic number.

28542269308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28542269308 is an abundant number, since it is smaller than the sum of its proper divisors (31132027052).

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

28542269308 is a wasteful number, since it uses less digits than its factorization.

28542269308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935834 (or 3935825 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 28542269308 in words is "twenty-eight billion, five hundred forty-two million, two hundred sixty-nine thousand, three hundred eight".