203073870 has 64 divisors (see below), whose sum is σ = 511764480. Its totient is φ = 51504000.

The previous prime is 203073869. The next prime is 203073883. The reversal of 203073870 is 78370302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53020 + ... + 56720.

It is an arithmetic number, because the mean of its divisors is an integer number (7996320).

Almost surely, 2^203073870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203073870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255882240).

203073870 is an abundant number, since it is smaller than the sum of its proper divisors (308690610).

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

203073870 is a wasteful number, since it uses less digits than its factorization.

203073870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 203073870 is about 14250.3989417841. The cubic root of 203073870 is about 587.7843452301.

The spelling of 203073870 in words is "two hundred three million, seventy-three thousand, eight hundred seventy".