28742858600 has 48 divisors (see below), whose sum is σ = 66905887020. Its totient is φ = 11483596800.

The previous prime is 28742858549. The next prime is 28742858603. The reversal of 28742858600 is 685824782.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4437424996 + 24305433604 = 66614^2 + 155902^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (28742858603) 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, 86360 + ... + 254840.

Almost surely, 2^28742858600 is an apocalyptic number.

28742858600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28742858600 is an abundant number, since it is smaller than the sum of its proper divisors (38163028420).

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

28742858600 is a wasteful number, since it uses less digits than its factorization.

28742858600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169350 (or 169341 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 28742858600 in words is "twenty-eight billion, seven hundred forty-two million, eight hundred fifty-eight thousand, six hundred".