83303840 has 24 divisors (see below), whose sum is σ = 196805700. Its totient is φ = 33321472.

The previous prime is 83303839. The next prime is 83303849. The reversal of 83303840 is 4830338.

It can be written as a sum of positive squares in 2 ways, for example, as 73891216 + 9412624 = 8596^2 + 3068^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83303849) 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, 260165 + ... + 260484.

Almost surely, 2^83303840 is an apocalyptic number.

83303840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83303840 is an abundant number, since it is smaller than the sum of its proper divisors (113501860).

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

83303840 is a wasteful number, since it uses less digits than its factorization.

83303840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520664 (or 520656 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 83303840 is about 9127.0937323992. The cubic root of 83303840 is about 436.7386966882.

The spelling of 83303840 in words is "eighty-three million, three hundred three thousand, eight hundred forty".