403244040 has 64 divisors (see below), whose sum is σ = 1216555200. Its totient is φ = 106925312.

The previous prime is 403243991. The next prime is 403244053. The reversal of 403244040 is 40442304.

It is a junction number, because it is equal to n+sod(n) for n = 403243998 and 403244016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12094 + ... + 30866.

It is an arithmetic number, because the mean of its divisors is an integer number (19008675).

Almost surely, 2^403244040 is an apocalyptic number.

403244040 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 403244040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608277600).

403244040 is an abundant number, since it is smaller than the sum of its proper divisors (813311160).

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

403244040 is a wasteful number, since it uses less digits than its factorization.

403244040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18966 (or 18962 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 403244040 is about 20080.9372291235. The cubic root of 403244040 is about 738.7927967282.

Adding to 403244040 its reverse (40442304), we get a palindrome (443686344).

The spelling of 403244040 in words is "four hundred three million, two hundred forty-four thousand, forty".