233897440 has 48 divisors (see below), whose sum is σ = 631526112. Its totient is φ = 80193024.

The previous prime is 233897437. The next prime is 233897459. The reversal of 233897440 is 44798332.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 233897393 and 233897402.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 103299 + ... + 105538.

It is an arithmetic number, because the mean of its divisors is an integer number (13156794).

Almost surely, 2^233897440 is an apocalyptic number.

233897440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233897440 is an abundant number, since it is smaller than the sum of its proper divisors (397628672).

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

233897440 is a wasteful number, since it uses less digits than its factorization.

233897440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208859 (or 208851 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 233897440 is about 15293.7058949098. The cubic root of 233897440 is about 616.1339732215.

The spelling of 233897440 in words is "two hundred thirty-three million, eight hundred ninety-seven thousand, four hundred forty".