28142372023734 has 64 divisors (see below), whose sum is σ = 57268493821440. Its totient is φ = 9217751235840.

The previous prime is 28142372023643. The next prime is 28142372023739. The reversal of 28142372023734 is 43732027324182.

It is a super-2 number, since 2×28142372023734² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28142372023739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231302764 + ... + 231424400.

It is an arithmetic number, because the mean of its divisors is an integer number (894820215960).

Almost surely, 2^{28142372023734} is an apocalyptic number.

28142372023734 is an abundant number, since it is smaller than the sum of its proper divisors (29126121797706).

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

28142372023734 is a wasteful number, since it uses less digits than its factorization.

28142372023734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123525.

The product of its (nonzero) digits is 2709504, while the sum is 48.

The spelling of 28142372023734 in words is "twenty-eight trillion, one hundred forty-two billion, three hundred seventy-two million, twenty-three thousand, seven hundred thirty-four".