33228465840 has 160 divisors (see below), whose sum is σ = 114521955840. Its totient is φ = 8855633664.

The previous prime is 33228465839. The next prime is 33228465857. The reversal of 33228465840 is 4856482233.

33228465840 is a `hidden beast` number, since 3 + 3 + 2 + 28 + 46 + 584 + 0 = 666.

It is a super-2 number, since 2×33228465840² (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 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 31 ways as a sum of consecutive naturals, for example, 4754989 + ... + 4761971.

It is an arithmetic number, because the mean of its divisors is an integer number (715762224).

Almost surely, 2^33228465840 is an apocalyptic number.

33228465840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33228465840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57260977920).

33228465840 is an abundant number, since it is smaller than the sum of its proper divisors (81293490000).

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

33228465840 is a wasteful number, since it uses less digits than its factorization.

33228465840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208 (or 9196 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 33228465840 in words is "thirty-three billion, two hundred twenty-eight million, four hundred sixty-five thousand, eight hundred forty".