158428205 has 18 divisors (see below), whose sum is σ = 206339454. Its totient is φ = 116722944.

The previous prime is 158428187. The next prime is 158428243. The reversal of 158428205 is 502824851.

It is a happy number.

158428205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 146942884 + 11485321 = 12122^2 + 3389^2 .

It is a de Polignac number, because none of the positive numbers 2^k-158428205 is a prime.

It is a super-2 number, since 2×158428205² = 50198992279044050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 365669 + ... + 366101.

It is an arithmetic number, because the mean of its divisors is an integer number (11463303).

Almost surely, 2^158428205 is an apocalyptic number.

It is an amenable number.

158428205 is a deficient number, since it is larger than the sum of its proper divisors (47911249).

158428205 is an frugal number, since it uses more digits than its factorization.

158428205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 158428205 is about 12586.8266453463. The cubic root of 158428205 is about 541.0999584103.

The spelling of 158428205 in words is "one hundred fifty-eight million, four hundred twenty-eight thousand, two hundred five".