33871000428 has 72 divisors (see below), whose sum is σ = 90964626480. Its totient is φ = 10606377600.

The previous prime is 33871000417. The next prime is 33871000433. The reversal of 33871000428 is 82400017833.

It is a super-2 number, since 2×33871000428² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 33871000392 and 33871000401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399798 + ... + 477053.

It is an arithmetic number, because the mean of its divisors is an integer number (1263397590).

Almost surely, 2^33871000428 is an apocalyptic number.

It is an amenable number.

33871000428 is an abundant number, since it is smaller than the sum of its proper divisors (57093626052).

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

33871000428 is a wasteful number, since it uses less digits than its factorization.

33871000428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876927 (or 876922 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 33871000428 in words is "thirty-three billion, eight hundred seventy-one million, four hundred twenty-eight", and thus it is an aban number.