158240020 has 24 divisors (see below), whose sum is σ = 333244800. Its totient is φ = 63116832.

The previous prime is 158240011. The next prime is 158240021. The reversal of 158240020 is 20042851.

It is a junction number, because it is equal to n+sod(n) for n = 158239973 and 158240000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158240021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3840 + ... + 18199.

It is an arithmetic number, because the mean of its divisors is an integer number (13885200).

Almost surely, 2^158240020 is an apocalyptic number.

158240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158240020 is an abundant number, since it is smaller than the sum of its proper divisors (175004780).

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

158240020 is a wasteful number, since it uses less digits than its factorization.

158240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22407 (or 22405 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 158240020 is about 12579.3489497668. The cubic root of 158240020 is about 540.8856294870.

Adding to 158240020 its reverse (20042851), we get a palindrome (178282871).

The spelling of 158240020 in words is "one hundred fifty-eight million, two hundred forty thousand, twenty".