28340884243842 has 32 divisors (see below), whose sum is σ = 61589697515520. Its totient is φ = 8661051210960.

The previous prime is 28340884243831. The next prime is 28340884243877. The reversal of 28340884243842 is 24834248804382.

It is a super-2 number, since 2×28340884243842² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4009742398 + ... + 4009749465.

It is an arithmetic number, because the mean of its divisors is an integer number (1924678047360).

Almost surely, 2^{28340884243842} is an apocalyptic number.

28340884243842 is an abundant number, since it is smaller than the sum of its proper divisors (33248813271678).

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

28340884243842 is a wasteful number, since it uses less digits than its factorization.

28340884243842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019491918.

The product of its (nonzero) digits is 75497472, while the sum is 60.

The spelling of 28340884243842 in words is "twenty-eight trillion, three hundred forty billion, eight hundred eighty-four million, two hundred forty-three thousand, eight hundred forty-two".