154222998 has 8 divisors (see below), whose sum is σ = 308446008. Its totient is φ = 51407664.

The previous prime is 154222979. The next prime is 154223011. The reversal of 154222998 is 899222451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

154222998 is an admirable number.

It is a super-2 number, since 2×154222998² = 47569466224216008, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 12851911 + ... + 12851922.

It is an arithmetic number, because the mean of its divisors is an integer number (38555751).

Almost surely, 2^154222998 is an apocalyptic number.

154222998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

154222998 is a wasteful number, since it uses less digits than its factorization.

154222998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25703838.

The product of its digits is 103680, while the sum is 42.

The square root of 154222998 is about 12418.6552412087. The cubic root of 154222998 is about 536.2694378444.

The spelling of 154222998 in words is "one hundred fifty-four million, two hundred twenty-two thousand, nine hundred ninety-eight".