28177234602 has 64 divisors (see below), whose sum is σ = 62096025600. Its totient is φ = 8453018880.

The previous prime is 28177234601. The next prime is 28177234609. The reversal of 28177234602 is 20643277182.

It is a happy number.

It is a super-2 number, since 2×28177234602² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28177234601) 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, 3362674 + ... + 3371042.

It is an arithmetic number, because the mean of its divisors is an integer number (970250400).

Almost surely, 2^28177234602 is an apocalyptic number.

28177234602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28177234602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31048012800).

28177234602 is an abundant number, since it is smaller than the sum of its proper divisors (33918790998).

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

28177234602 is a wasteful number, since it uses less digits than its factorization.

28177234602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891.

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 28177234602 in words is "twenty-eight billion, one hundred seventy-seven million, two hundred thirty-four thousand, six hundred two".