153801820 has 12 divisors (see below), whose sum is σ = 322983864. Its totient is φ = 61520720.

The previous prime is 153801799. The next prime is 153801847. The reversal of 153801820 is 28108351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3845026 + ... + 3845065.

It is an arithmetic number, because the mean of its divisors is an integer number (26915322).

Almost surely, 2^153801820 is an apocalyptic number.

153801820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153801820 is an abundant number, since it is smaller than the sum of its proper divisors (169182044).

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

153801820 is a wasteful number, since it uses less digits than its factorization.

153801820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690100 (or 7690098 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 153801820 is about 12401.6861756779. The cubic root of 153801820 is about 535.7808146286.

The spelling of 153801820 in words is "one hundred fifty-three million, eight hundred one thousand, eight hundred twenty".