405874620 has 72 divisors (see below), whose sum is σ = 1232876736. Its totient is φ = 108081792.

The previous prime is 405874619. The next prime is 405874627. The reversal of 405874620 is 26478504.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405874627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195709 + ... + 197771.

It is an arithmetic number, because the mean of its divisors is an integer number (17123288).

Almost surely, 2^405874620 is an apocalyptic number.

It is an amenable number.

405874620 is an abundant number, since it is smaller than the sum of its proper divisors (827002116).

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

405874620 is a wasteful number, since it uses less digits than its factorization.

405874620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 405874620 is about 20146.3301869100. The cubic root of 405874620 is about 740.3958315696.

The spelling of 405874620 in words is "four hundred five million, eight hundred seventy-four thousand, six hundred twenty".