28898118145784 has 8 divisors (see below), whose sum is σ = 54183971523360. Its totient is φ = 14449059072888.

The previous prime is 28898118145759. The next prime is 28898118145789. The reversal of 28898118145784 is 48754181189882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28898118145789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806132384104 + ... + 1806132384119.

It is an arithmetic number, because the mean of its divisors is an integer number (6772996440420).

Almost surely, 2^{28898118145784} is an apocalyptic number.

It is an amenable number.

28898118145784 is a deficient number, since it is larger than the sum of its proper divisors (25285853377576).

28898118145784 is a wasteful number, since it uses less digits than its factorization.

28898118145784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612264768229 (or 3612264768225 counting only the distinct ones).

The product of its digits is 330301440, while the sum is 74.

The spelling of 28898118145784 in words is "twenty-eight trillion, eight hundred ninety-eight billion, one hundred eighteen million, one hundred forty-five thousand, seven hundred eighty-four".