403213040 has 20 divisors (see below), whose sum is σ = 937470504. Its totient is φ = 161285184.

The previous prime is 403213037. The next prime is 403213061. The reversal of 403213040 is 40312304.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520002 + ... + 2520161.

Almost surely, 2^403213040 is an apocalyptic number.

403213040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403213040 is an abundant number, since it is smaller than the sum of its proper divisors (534257464).

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

403213040 is a wasteful number, since it uses less digits than its factorization.

403213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040176 (or 5040170 counting only the distinct ones).

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

The square root of 403213040 is about 20080.1653379647. The cubic root of 403213040 is about 738.7738643024.

Adding to 403213040 its reverse (40312304), we get a palindrome (443525344).

The spelling of 403213040 in words is "four hundred three million, two hundred thirteen thousand, forty".