833330640 has 40 divisors (see below), whose sum is σ = 2583325728. Its totient is φ = 222221440.

The previous prime is 833330639. The next prime is 833330647. The reversal of 833330640 is 46033338.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 833330598 and 833330607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (833330647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1735866 + ... + 1736345.

Almost surely, 2^833330640 is an apocalyptic number.

833330640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

833330640 is an abundant number, since it is smaller than the sum of its proper divisors (1749995088).

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

833330640 is a wasteful number, since it uses less digits than its factorization.

833330640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472227 (or 3472221 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 833330640 is about 28867.4668095418. The cubic root of 833330640 is about 941.0350150705.

Adding to 833330640 its reverse (46033338), we get a palindrome (879363978).

The spelling of 833330640 in words is "eight hundred thirty-three million, three hundred thirty thousand, six hundred forty".