153849840 has 80 divisors (see below), whose sum is σ = 502051200. Its totient is φ = 38866176.

The previous prime is 153849799. The next prime is 153849841. The reversal of 153849840 is 48948351.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 153849792 and 153849801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153849841) 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, 12310 + ... + 21429.

It is an arithmetic number, because the mean of its divisors is an integer number (6275640).

Almost surely, 2^153849840 is an apocalyptic number.

153849840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153849840 is an abundant number, since it is smaller than the sum of its proper divisors (348201360).

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

153849840 is a wasteful number, since it uses less digits than its factorization.

153849840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33774 (or 33768 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 153849840 is about 12403.6220516428. The cubic root of 153849840 is about 535.8365693168.

The spelling of 153849840 in words is "one hundred fifty-three million, eight hundred forty-nine thousand, eight hundred forty".