158255640 has 192 divisors, whose sum is σ = 553442400. Its totient is φ = 40220928.

The previous prime is 158255633. The next prime is 158255653. The reversal of 158255640 is 46552851.

158255640 is a `hidden beast` number, since 1 + 5 + 8 + 2 + 5 + 5 + 640 = 666.

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 = 158255595 and 158255604.

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 47 ways as a sum of consecutive naturals, for example, 571182 + ... + 571458.

Almost surely, 2^158255640 is an apocalyptic number.

158255640 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 158255640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276721200).

158255640 is an abundant number, since it is smaller than the sum of its proper divisors (395186760).

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

158255640 is a wasteful number, since it uses less digits than its factorization.

158255640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 158255640 is about 12579.9697932865. The cubic root of 158255640 is about 540.9034259870.

The spelling of 158255640 in words is "one hundred fifty-eight million, two hundred fifty-five thousand, six hundred forty".