403415240 has 64 divisors (see below), whose sum is σ = 923877360. Its totient is φ = 158515200.

The previous prime is 403415231. The next prime is 403415249. The reversal of 403415240 is 42514304.

It is an interprime number because it is at equal distance from previous prime (403415231) and next prime (403415249).

It can be written as a sum of positive squares in 8 ways, for example, as 325658116 + 77757124 = 18046^2 + 8818^2 .

It is not an unprimeable number, because it can be changed into a prime (403415249) 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, 670940 + ... + 671540.

Almost surely, 2^403415240 is an apocalyptic number.

403415240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403415240 is an abundant number, since it is smaller than the sum of its proper divisors (520462120).

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

403415240 is a wasteful number, since it uses less digits than its factorization.

403415240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 403415240 is about 20085.1995260192. The cubic root of 403415240 is about 738.8973351044.

Adding to 403415240 its reverse (42514304), we get a palindrome (445929544).

The spelling of 403415240 in words is "four hundred three million, four hundred fifteen thousand, two hundred forty".