203049840 has 80 divisors (see below), whose sum is σ = 719382528. Its totient is φ = 46411008.

The previous prime is 203049817. The next prime is 203049841. The reversal of 203049840 is 48940302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 203049798 and 203049807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203049841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58752 + ... + 62111.

Almost surely, 2^203049840 is an apocalyptic number.

203049840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203049840 is an abundant number, since it is smaller than the sum of its proper divisors (516332688).

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

203049840 is a wasteful number, since it uses less digits than its factorization.

203049840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120886 (or 120880 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 203049840 is about 14249.5557825499. Note that the first 3 decimals coincide. The cubic root of 203049840 is about 587.7611598822.

The spelling of 203049840 in words is "two hundred three million, forty-nine thousand, eight hundred forty".