33920296380 has 36 divisors (see below), whose sum is σ = 102891566232. Its totient is φ = 9045412320.

The previous prime is 33920296357. The next prime is 33920296387. The reversal of 33920296380 is 8369202933.

33920296380 is a `hidden beast` number, since 3 + 3 + 9 + 2 + 0 + 2 + 9 + 638 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×33920296380² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33920296387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94222866 + ... + 94223225.

It is an arithmetic number, because the mean of its divisors is an integer number (2858099062).

Almost surely, 2^33920296380 is an apocalyptic number.

33920296380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33920296380 is an abundant number, since it is smaller than the sum of its proper divisors (68971269852).

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

33920296380 is a wasteful number, since it uses less digits than its factorization.

33920296380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188446106 (or 188446101 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 33920296380 in words is "thirty-three billion, nine hundred twenty million, two hundred ninety-six thousand, three hundred eighty".