154222866 has 144 divisors (see below), whose sum is σ = 419462784. Its totient is φ = 41570496.

The previous prime is 154222847. The next prime is 154222891. The reversal of 154222866 is 668222451.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 154222866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2112606 + ... + 2112678.

It is an arithmetic number, because the mean of its divisors is an integer number (2912936).

Almost surely, 2^154222866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154222866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209731392).

154222866 is an abundant number, since it is smaller than the sum of its proper divisors (265239918).

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

154222866 is an frugal number, since it uses more digits than its factorization.

154222866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 108 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 154222866 is about 12418.6499266225. The cubic root of 154222866 is about 536.2692848461.

The spelling of 154222866 in words is "one hundred fifty-four million, two hundred twenty-two thousand, eight hundred sixty-six".