233406840 has 32 divisors (see below), whose sum is σ = 700220880. Its totient is φ = 62241792.

The previous prime is 233406839. The next prime is 233406847. The reversal of 233406840 is 48604332.

233406840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 233406798 and 233406807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233406847) 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, 972409 + ... + 972648.

Almost surely, 2^233406840 is an apocalyptic number.

233406840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233406840 is an abundant number, since it is smaller than the sum of its proper divisors (466814040).

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

233406840 is a wasteful number, since it uses less digits than its factorization.

233406840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945071 (or 1945067 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 233406840 is about 15277.6581975118. The cubic root of 233406840 is about 615.7028912413.

The spelling of 233406840 in words is "two hundred thirty-three million, four hundred six thousand, eight hundred forty".