2222621478 has 128 divisors (see below), whose sum is σ = 6284160000. Its totient is φ = 577251360.

The previous prime is 2222621473. The next prime is 2222621543. The reversal of 2222621478 is 8741262222.

2222621478 is a `hidden beast` number, since 2 + 2 + 22 + 621 + 4 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222621473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198288 + ... + 209196.

It is an arithmetic number, because the mean of its divisors is an integer number (49095000).

Almost surely, 2^2222621478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222621478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3142080000).

2222621478 is an abundant number, since it is smaller than the sum of its proper divisors (4061538522).

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

2222621478 is a wasteful number, since it uses less digits than its factorization.

2222621478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10952 (or 10932 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 2222621478 is about 47144.6866359296. The cubic root of 2222621478 is about 1305.0340273860.

The spelling of 2222621478 in words is "two billion, two hundred twenty-two million, six hundred twenty-one thousand, four hundred seventy-eight".