33897777228 has 54 divisors (see below), whose sum is σ = 99675612036. Its totient is φ = 9685078704.

The previous prime is 33897777209. The next prime is 33897777233. The reversal of 33897777228 is 82277779833.

33897777228 is a `hidden beast` number, since 338 + 9 + 7 + 7 + 77 + 228 = 666.

It is a super-2 number, since 2×33897777228² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9606450 + ... + 9609977.

Almost surely, 2^33897777228 is an apocalyptic number.

It is an amenable number.

33897777228 is an abundant number, since it is smaller than the sum of its proper divisors (65777834808).

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

33897777228 is a wasteful number, since it uses less digits than its factorization.

33897777228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19216451 (or 19216439 counting only the distinct ones).

The product of its digits is 49787136, while the sum is 63.

The spelling of 33897777228 in words is "thirty-three billion, eight hundred ninety-seven million, seven hundred seventy-seven thousand, two hundred twenty-eight".