403013240 has 48 divisors (see below), whose sum is σ = 1054830600. Its totient is φ = 138175296.

The previous prime is 403013197. The next prime is 403013249. The reversal of 403013240 is 42310304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403013249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100850 + ... + 104769.

Almost surely, 2^403013240 is an apocalyptic number.

403013240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403013240 is an abundant number, since it is smaller than the sum of its proper divisors (651817360).

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

403013240 is a wasteful number, since it uses less digits than its factorization.

403013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205644 (or 205633 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 403013240 is about 20075.1896628650. The cubic root of 403013240 is about 738.6518184764.

Adding to 403013240 its reverse (42310304), we get a palindrome (445323544).

The spelling of 403013240 in words is "four hundred three million, thirteen thousand, two hundred forty".