154890880 has 128 divisors (see below), whose sum is σ = 394421760. Its totient is φ = 58060800.

The previous prime is 154890847. The next prime is 154890887. The reversal of 154890880 is 88098451.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (154890887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733975 + ... + 734185.

It is an arithmetic number, because the mean of its divisors is an integer number (3081420).

Almost surely, 2^154890880 is an apocalyptic number.

154890880 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 154890880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197210880).

154890880 is an abundant number, since it is smaller than the sum of its proper divisors (239530880).

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

154890880 is a wasteful number, since it uses less digits than its factorization.

154890880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 154890880 is about 12445.5164617624. The cubic root of 154890880 is about 537.0424503522.

The spelling of 154890880 in words is "one hundred fifty-four million, eight hundred ninety thousand, eight hundred eighty".