28748005918 has 8 divisors (see below), whose sum is σ = 43935631848. Its totient is φ = 14102795304.

The previous prime is 28748005903. The next prime is 28748005919. The reversal of 28748005918 is 81950084782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28748005918² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28748005919) 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, 135603696 + ... + 135603907.

It is an arithmetic number, because the mean of its divisors is an integer number (5491953981).

Almost surely, 2^28748005918 is an apocalyptic number.

28748005918 is a deficient number, since it is larger than the sum of its proper divisors (15187625930).

28748005918 is a wasteful number, since it uses less digits than its factorization.

28748005918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271207658.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 28748005918 in words is "twenty-eight billion, seven hundred forty-eight million, five thousand, nine hundred eighteen".