403563420 has 288 divisors, whose sum is σ = 1440129600. Its totient is φ = 90574848.

The previous prime is 403563409. The next prime is 403563421. The reversal of 403563420 is 24365304.

403563420 is a `hidden beast` number, since 4 + 0 + 3 + 5 + 634 + 20 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403563421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1289184 + ... + 1289496.

It is an arithmetic number, because the mean of its divisors is an integer number (5000450).

Almost surely, 2^403563420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403563420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720064800).

403563420 is an abundant number, since it is smaller than the sum of its proper divisors (1036566180).

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

403563420 is a wasteful number, since it uses less digits than its factorization.

403563420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 403563420 is about 20088.8879732055. The cubic root of 403563420 is about 738.9877931018.

The spelling of 403563420 in words is "four hundred three million, five hundred sixty-three thousand, four hundred twenty".