203422340 has 96 divisors (see below), whose sum is σ = 498960000. Its totient is φ = 68843520.

The previous prime is 203422309. The next prime is 203422421. The reversal of 203422340 is 43224302.

It is a super-2 number, since 2×203422340² = 82761296822151200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407411 + ... + 407909.

It is an arithmetic number, because the mean of its divisors is an integer number (5197500).

Almost surely, 2^203422340 is an apocalyptic number.

203422340 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 203422340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249480000).

203422340 is an abundant number, since it is smaller than the sum of its proper divisors (295537660).

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

203422340 is a wasteful number, since it uses less digits than its factorization.

203422340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 203422340 is about 14262.6203763544. The cubic root of 203422340 is about 588.1203611569.

Adding to 203422340 its reverse (43224302), we get a palindrome (246646642).

The spelling of 203422340 in words is "two hundred three million, four hundred twenty-two thousand, three hundred forty".