28747089240 has 32 divisors (see below), whose sum is σ = 86241268080. Its totient is φ = 7665890432.

The previous prime is 28747089227. The next prime is 28747089247. The reversal of 28747089240 is 4298074782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28747089247) 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, 119779419 + ... + 119779658.

Almost surely, 2^28747089240 is an apocalyptic number.

28747089240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28747089240 is an abundant number, since it is smaller than the sum of its proper divisors (57494178840).

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

28747089240 is a wasteful number, since it uses less digits than its factorization.

28747089240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239559091 (or 239559087 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 28747089240 in words is "twenty-eight billion, seven hundred forty-seven million, eighty-nine thousand, two hundred forty".