154889400 has 96 divisors (see below), whose sum is σ = 493205040. Its totient is φ = 40181760.

The previous prime is 154889389. The next prime is 154889401. The reversal of 154889400 is 4988451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154889401) 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, 18712 + ... + 25688.

Almost surely, 2^154889400 is an apocalyptic number.

154889400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154889400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246602520).

154889400 is an abundant number, since it is smaller than the sum of its proper divisors (338315640).

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

154889400 is a wasteful number, since it uses less digits than its factorization.

154889400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033 (or 7024 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 154889400 is about 12445.4570024568. The cubic root of 154889400 is about 537.0407398462.

The spelling of 154889400 in words is "one hundred fifty-four million, eight hundred eighty-nine thousand, four hundred".