405161622 has 32 divisors (see below), whose sum is σ = 905355360. Its totient is φ = 134304480.

The previous prime is 405161621. The next prime is 405161633. The reversal of 405161622 is 226161504.

405161622 is a `hidden beast` number, since 40 + 5 + 1 + 616 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405161621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10953 + ... + 30500.

It is an arithmetic number, because the mean of its divisors is an integer number (28292355).

Almost surely, 2^405161622 is an apocalyptic number.

405161622 is an abundant number, since it is smaller than the sum of its proper divisors (500193738).

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

405161622 is a wasteful number, since it uses less digits than its factorization.

405161622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41645 (or 41639 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 405161622 is about 20128.6269278359. The cubic root of 405161622 is about 739.9620275134.

The spelling of 405161622 in words is "four hundred five million, one hundred sixty-one thousand, six hundred twenty-two".