28876134 has 64 divisors (see below), whose sum is σ = 68935680. Its totient is φ = 7892640.

The previous prime is 28876121. The next prime is 28876151. The reversal of 28876134 is 43167882.

It is a super-2 number, since 2×28876134² = 1667662229571912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28876092 and 28876101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106419 + ... + 106689.

It is an arithmetic number, because the mean of its divisors is an integer number (1077120).

Almost surely, 2^28876134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28876134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34467840).

28876134 is an abundant number, since it is smaller than the sum of its proper divisors (40059546).

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

28876134 is a wasteful number, since it uses less digits than its factorization.

28876134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its digits is 64512, while the sum is 39.

The square root of 28876134 is about 5373.6518309247. The cubic root of 28876134 is about 306.7936380856.

The spelling of 28876134 in words is "twenty-eight million, eight hundred seventy-six thousand, one hundred thirty-four".