203215940 has 48 divisors (see below), whose sum is σ = 435555120. Its totient is φ = 79626240.

The previous prime is 203215937. The next prime is 203215981. The reversal of 203215940 is 49512302.

It can be written as a sum of positive squares in 8 ways, for example, as 35617024 + 167598916 = 5968^2 + 12946^2 .

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 15 ways as a sum of consecutive naturals, for example, 263876 + ... + 264644.

It is an arithmetic number, because the mean of its divisors is an integer number (9074065).

Almost surely, 2^203215940 is an apocalyptic number.

203215940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203215940 is an abundant number, since it is smaller than the sum of its proper divisors (232339180).

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

203215940 is a wasteful number, since it uses less digits than its factorization.

203215940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 203215940 is about 14255.3828429825. The cubic root of 203215940 is about 587.9213841244.

The spelling of 203215940 in words is "two hundred three million, two hundred fifteen thousand, nine hundred forty".