405780088 has 32 divisors (see below), whose sum is σ = 871372800. Its totient is φ = 173536992.

The previous prime is 405780083. The next prime is 405780101. The reversal of 405780088 is 880087504.

It is a self number, because there is not a number n which added to its sum of digits gives 405780088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405780083) 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, 19833 + ... + 34711.

It is an arithmetic number, because the mean of its divisors is an integer number (27230400).

Almost surely, 2^405780088 is an apocalyptic number.

It is an amenable number.

405780088 is an abundant number, since it is smaller than the sum of its proper divisors (465592712).

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

405780088 is a wasteful number, since it uses less digits than its factorization.

405780088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15379 (or 15375 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 405780088 is about 20143.9839157998. The cubic root of 405780088 is about 740.3383453987.

The spelling of 405780088 in words is "four hundred five million, seven hundred eighty thousand, eighty-eight".