203478372 has 144 divisors (see below), whose sum is σ = 591433920. Its totient is φ = 60279552.

The previous prime is 203478343. The next prime is 203478377. The reversal of 203478372 is 273874302.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (203478377) by changing a digit.

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, 662643 + ... + 662949.

It is an arithmetic number, because the mean of its divisors is an integer number (4107180).

Almost surely, 2^203478372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203478372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295716960).

203478372 is an abundant number, since it is smaller than the sum of its proper divisors (387955548).

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

203478372 is a wasteful number, since it uses less digits than its factorization.

203478372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 203478372 is about 14264.5845365366. The cubic root of 203478372 is about 588.1743547922.

The spelling of 203478372 in words is "two hundred three million, four hundred seventy-eight thousand, three hundred seventy-two".