158986620 has 72 divisors (see below), whose sum is σ = 519363936. Its totient is φ = 39134592.

The previous prime is 158986559. The next prime is 158986673. The reversal of 158986620 is 26689851.

158986620 is a `hidden beast` number, since 1 + 589 + 8 + 6 + 62 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31632 + ... + 36311.

It is an arithmetic number, because the mean of its divisors is an integer number (7213388).

Almost surely, 2^158986620 is an apocalyptic number.

158986620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158986620 is an abundant number, since it is smaller than the sum of its proper divisors (360377316).

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

158986620 is a wasteful number, since it uses less digits than its factorization.

158986620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67971 (or 67966 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 158986620 is about 12608.9896502456. The cubic root of 158986620 is about 541.7349548093.

It can be divided in two parts, 1589 and 86620, that added together give a square (88209 = 297²).

The spelling of 158986620 in words is "one hundred fifty-eight million, nine hundred eighty-six thousand, six hundred twenty".