33609631828 has 12 divisors (see below), whose sum is σ = 58841554240. Its totient is φ = 16797759192.

The previous prime is 33609631823. The next prime is 33609631849. The reversal of 33609631828 is 82813690633.

It is a happy number.

It is a super-2 number, since 2×33609631828² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33609631823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753458 + ... + 1772521.

Almost surely, 2^33609631828 is an apocalyptic number.

It is an amenable number.

33609631828 is a deficient number, since it is larger than the sum of its proper divisors (25231922412).

33609631828 is a wasteful number, since it uses less digits than its factorization.

33609631828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528366 (or 3528364 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 33609631828 in words is "thirty-three billion, six hundred nine million, six hundred thirty-one thousand, eight hundred twenty-eight".