154836540 has 72 divisors (see below), whose sum is σ = 472748640. Its totient is φ = 41019264.

The previous prime is 154836509. The next prime is 154836547. The reversal of 154836540 is 45638451.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 154836495 and 154836504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154836547) 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, 25521 + ... + 30999.

Almost surely, 2^154836540 is an apocalyptic number.

154836540 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 154836540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236374320).

154836540 is an abundant number, since it is smaller than the sum of its proper divisors (317912100).

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

154836540 is a wasteful number, since it uses less digits than its factorization.

154836540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651 (or 5646 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 154836540 is about 12443.3331547460. Note that the first 3 decimals coincide. The cubic root of 154836540 is about 536.9796398968.

The spelling of 154836540 in words is "one hundred fifty-four million, eight hundred thirty-six thousand, five hundred forty".