403250000 has 70 divisors (see below), whose sum is σ = 977214054. Its totient is φ = 161200000.

The previous prime is 403249999. The next prime is 403250009. The reversal of 403250000 is 52304.

It can be written as a sum of positive squares in 7 ways, for example, as 402885184 + 364816 = 20072^2 + 604^2 .

It is a super-2 number, since 2×403250000² = 325221125000000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403250009) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 249194 + ... + 250806.

Almost surely, 2^403250000 is an apocalyptic number.

403250000 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 403250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488607027).

403250000 is an abundant number, since it is smaller than the sum of its proper divisors (573964054).

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

403250000 is an frugal number, since it uses more digits than its factorization.

403250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 403250000 is about 20081.0856280232. The cubic root of 403250000 is about 738.7964365285.

The spelling of 403250000 in words is "four hundred three million, two hundred fifty thousand".