154783980 has 192 divisors, whose sum is σ = 549521280. Its totient is φ = 35831808.

The previous prime is 154783973. The next prime is 154784027. The reversal of 154783980 is 89387451.

154783980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 118692 + ... + 119988.

It is an arithmetic number, because the mean of its divisors is an integer number (2862090).

Almost surely, 2^154783980 is an apocalyptic number.

154783980 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 154783980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274760640).

154783980 is an abundant number, since it is smaller than the sum of its proper divisors (394737300).

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

154783980 is a wasteful number, since it uses less digits than its factorization.

154783980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 154783980 is about 12441.2210011719. The cubic root of 154783980 is about 536.9188729227.

The spelling of 154783980 in words is "one hundred fifty-four million, seven hundred eighty-three thousand, nine hundred eighty".