28292122709040 has 80 divisors (see below), whose sum is σ = 87707527760736. Its totient is φ = 7544398540800.

The previous prime is 28292122709017. The next prime is 28292122709041. The reversal of 28292122709040 is 4090722129282.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (28292122709041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9716050 + ... + 12287630.

Almost surely, 2^{28292122709040} is an apocalyptic number.

28292122709040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28292122709040 is an abundant number, since it is smaller than the sum of its proper divisors (59415405051696).

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

28292122709040 is a wasteful number, since it uses less digits than its factorization.

28292122709040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617438 (or 2617432 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 28292122709040 in words is "twenty-eight trillion, two hundred ninety-two billion, one hundred twenty-two million, seven hundred nine thousand, forty".