203912940 has 384 divisors, whose sum is σ = 789626880. Its totient is φ = 38016000.

The previous prime is 203912903. The next prime is 203912941. The reversal of 203912940 is 49219302.

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 = 203912898 and 203912907.

It is not an unprimeable number, because it can be changed into a prime (203912941) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2018890 + ... + 2018990.

It is an arithmetic number, because the mean of its divisors is an integer number (2056320).

Almost surely, 2^203912940 is an apocalyptic number.

203912940 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 203912940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394813440).

203912940 is an abundant number, since it is smaller than the sum of its proper divisors (585713940).

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

203912940 is a wasteful number, since it uses less digits than its factorization.

203912940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 203912940 is about 14279.8088222497. The cubic root of 203912940 is about 588.5927776505.

The spelling of 203912940 in words is "two hundred three million, nine hundred twelve thousand, nine hundred forty".