412621220 has 96 divisors (see below), whose sum is σ = 975421440. Its totient is φ = 145343360.

The previous prime is 412621217. The next prime is 412621273. The reversal of 412621220 is 22126214.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 412621192 and 412621201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1077149 + ... + 1077531.

It is an arithmetic number, because the mean of its divisors is an integer number (10160640).

Almost surely, 2^412621220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 412621220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487710720).

412621220 is an abundant number, since it is smaller than the sum of its proper divisors (562800220).

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

412621220 is a wasteful number, since it uses less digits than its factorization.

412621220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 412621220 is about 20313.0800224880. The cubic root of 412621220 is about 744.4756877228.

Adding to 412621220 its reverse (22126214), we get a palindrome (434747434).

The spelling of 412621220 in words is "four hundred twelve million, six hundred twenty-one thousand, two hundred twenty".