405048 has 32 divisors (see below), whose sum is σ = 1157760. Its totient is φ = 115680.

The previous prime is 405047. The next prime is 405049. The reversal of 405048 is 840504.

It is an interprime number because it is at equal distance from previous prime (405047) and next prime (405049).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (36180).

2⁴⁰⁵⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

405048 is an abundant number, since it is smaller than the sum of its proper divisors (752712).

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

405048 is a wasteful number, since it uses less digits than its factorization.

405048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427 (or 2423 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 405048 is about 636.4338143122. The cubic root of 405048 is about 73.9892850325.

The spelling of 405048 in words is "four hundred five thousand, forty-eight".