405623022 has 16 divisors (see below), whose sum is σ = 927138432. Its totient is φ = 115892280.

The previous prime is 405622993. The next prime is 405623027. The reversal of 405623022 is 220326504.

It is a junction number, because it is equal to n+sod(n) for n = 405622983 and 405623001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405623027) 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, 4828804 + ... + 4828887.

It is an arithmetic number, because the mean of its divisors is an integer number (57946152).

Almost surely, 2^405623022 is an apocalyptic number.

405623022 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

405623022 is an abundant number, since it is smaller than the sum of its proper divisors (521515410).

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

405623022 is a wasteful number, since it uses less digits than its factorization.

405623022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657703.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 405623022 is about 20140.0849551336. The cubic root of 405623022 is about 740.2428117239.

Adding to 405623022 its reverse (220326504), we get a palindrome (625949526).

The spelling of 405623022 in words is "four hundred five million, six hundred twenty-three thousand, twenty-two".