203774340 has 144 divisors (see below), whose sum is σ = 724175424. Its totient is φ = 42336000.

The previous prime is 203774327. The next prime is 203774357. The reversal of 203774340 is 43477302.

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 = 203774298 and 203774307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29190 + ... + 35490.

It is an arithmetic number, because the mean of its divisors is an integer number (5028996).

Almost surely, 2^203774340 is an apocalyptic number.

203774340 is a gapful number since it is divisible by the number (20) 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 203774340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362087712).

203774340 is an abundant number, since it is smaller than the sum of its proper divisors (520401084).

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

203774340 is a wasteful number, since it uses less digits than its factorization.

203774340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338 (or 6329 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 203774340 is about 14274.9549911725. The cubic root of 203774340 is about 588.4593915608.

The spelling of 203774340 in words is "two hundred three million, seven hundred seventy-four thousand, three hundred forty".