153801720 has 128 divisors (see below), whose sum is σ = 542894400. Its totient is φ = 38596608.

The previous prime is 153801709. The next prime is 153801721. The reversal of 153801720 is 27108351.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153801721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14172 + ... + 22548.

Almost surely, 2^153801720 is an apocalyptic number.

153801720 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 153801720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271447200).

153801720 is an abundant number, since it is smaller than the sum of its proper divisors (389092680).

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

153801720 is a wasteful number, since it uses less digits than its factorization.

153801720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 153801720 is about 12401.6821439674. The cubic root of 153801720 is about 535.7806985093.

The spelling of 153801720 in words is "one hundred fifty-three million, eight hundred one thousand, seven hundred twenty".