33987277428 has 48 divisors (see below), whose sum is σ = 88158905856. Its totient is φ = 10120279680.

The previous prime is 33987277381. The next prime is 33987277433. The reversal of 33987277428 is 82477278933.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3509151 + ... + 3518822.

It is an arithmetic number, because the mean of its divisors is an integer number (1836643872).

Almost surely, 2^33987277428 is an apocalyptic number.

It is an amenable number.

33987277428 is an abundant number, since it is smaller than the sum of its proper divisors (54171628428).

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

33987277428 is a wasteful number, since it uses less digits than its factorization.

33987277428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7028024 (or 7028022 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 60.

The spelling of 33987277428 in words is "thirty-three billion, nine hundred eighty-seven million, two hundred seventy-seven thousand, four hundred twenty-eight".