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158854138 = 2199399131
BaseRepresentation
bin10010111011111…
…10101111111010
3102001220121220121
421131332233322
5311131313023
623432443454
73636144412
oct1135765772
9361817817
10158854138
118173a513
124524958a
1326bac041
1417151642
15de2cd5d
hex977ebfa

158854138 has 8 divisors (see below), whose sum is σ = 239479200. Its totient is φ = 79027740.

The previous prime is 158854121. The next prime is 158854139. The reversal of 158854138 is 831458851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 158854094 and 158854103.

It is not an unprimeable number, because it can be changed into a prime (158854139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199168 + ... + 199963.

It is an arithmetic number, because the mean of its divisors is an integer number (29934900).

Almost surely, 2158854138 is an apocalyptic number.

158854138 is a deficient number, since it is larger than the sum of its proper divisors (80625062).

158854138 is a wasteful number, since it uses less digits than its factorization.

158854138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399332.

The product of its digits is 153600, while the sum is 43.

The square root of 158854138 is about 12603.7350813162. The cubic root of 158854138 is about 541.5844388421.

The spelling of 158854138 in words is "one hundred fifty-eight million, eight hundred fifty-four thousand, one hundred thirty-eight".

Divisors: 1 2 199 398 399131 798262 79427069 158854138