154972224 has 224 divisors, whose sum is σ = 514990080. Its totient is φ = 45273600.

The previous prime is 154972199. The next prime is 154972231. The reversal of 154972224 is 422279451.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 589117 + ... + 589379.

Almost surely, 2^154972224 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 154972224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257495040).

154972224 is an abundant number, since it is smaller than the sum of its proper divisors (360017856).

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

154972224 is a wasteful number, since it uses less digits than its factorization.

154972224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 310 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 154972224 is about 12448.7840370054. The cubic root of 154972224 is about 537.1364467104.

The spelling of 154972224 in words is "one hundred fifty-four million, nine hundred seventy-two thousand, two hundred twenty-four".