154478646 has 48 divisors (see below), whose sum is σ = 383838624. Its totient is φ = 43984512.

The previous prime is 154478641. The next prime is 154478647. The reversal of 154478646 is 646874451.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154478641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37480 + ... + 41396.

It is an arithmetic number, because the mean of its divisors is an integer number (7996638).

Almost surely, 2^154478646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154478646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191919312).

154478646 is an abundant number, since it is smaller than the sum of its proper divisors (229359978).

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

154478646 is a wasteful number, since it uses less digits than its factorization.

154478646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245 (or 4242 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 154478646 is about 12428.9438811188. The cubic root of 154478646 is about 536.5655902301.

The spelling of 154478646 in words is "one hundred fifty-four million, four hundred seventy-eight thousand, six hundred forty-six".