403000000 has 196 divisors, whose sum is σ = 1111235776. Its totient is φ = 144000000.

The previous prime is 402999973. The next prime is 403000001. The reversal of 403000000 is 304.

It is not an unprimeable number, because it can be changed into a prime (403000001) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 12999985 + ... + 13000015.

Almost surely, 2^403000000 is an apocalyptic number.

403000000 is a gapful number since it is divisible by the number (40) 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 403000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555617888).

403000000 is an abundant number, since it is smaller than the sum of its proper divisors (708235776).

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

403000000 is an frugal number, since it uses more digits than its factorization.

403000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 403000000 is about 20074.8598998847. The cubic root of 403000000 is about 738.6437295303.

Adding to 403000000 its reverse (304), we get a palindrome (403000304).

The spelling of 403000000 in words is "four hundred three million", and thus it is an aban number.