28545865142234 has 8 divisors (see below), whose sum is σ = 46711415687328. Its totient is φ = 12975393246460.

The previous prime is 28545865142219. The next prime is 28545865142239. The reversal of 28545865142234 is 43224156854582.

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

It is a super-2 number, since 2×28545865142234² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28545865142239) 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, 648769662302 + ... + 648769662345.

It is an arithmetic number, because the mean of its divisors is an integer number (5838926960916).

Almost surely, 2^{28545865142234} is an apocalyptic number.

28545865142234 is a deficient number, since it is larger than the sum of its proper divisors (18165550545094).

28545865142234 is a wasteful number, since it uses less digits than its factorization.

28545865142234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297539324660.

The product of its digits is 73728000, while the sum is 59.

The spelling of 28545865142234 in words is "twenty-eight trillion, five hundred forty-five billion, eight hundred sixty-five million, one hundred forty-two thousand, two hundred thirty-four".