28400847236 has 12 divisors (see below), whose sum is σ = 49703144400. Its totient is φ = 14199948840.

The previous prime is 28400847197. The next prime is 28400847239. The reversal of 28400847236 is 63274800482.

It is a happy number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28400847239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39251 + ... + 241541.

It is an arithmetic number, because the mean of its divisors is an integer number (4141928700).

Almost surely, 2^28400847236 is an apocalyptic number.

It is an amenable number.

28400847236 is a deficient number, since it is larger than the sum of its proper divisors (21302297164).

28400847236 is a wasteful number, since it uses less digits than its factorization.

28400847236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237394 (or 237392 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 28400847236 in words is "twenty-eight billion, four hundred million, eight hundred forty-seven thousand, two hundred thirty-six".