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156090 = 23511243
BaseRepresentation
bin100110000110111010
321221010010
4212012322
514443330
63202350
71220034
oct460672
9257103
10156090
11a7300
12763b6
135607c
1440c54
15313b0
hex261ba

156090 has 48 divisors (see below), whose sum is σ = 421344. Its totient is φ = 36960.

The previous prime is 156089. The next prime is 156109. The reversal of 156090 is 90651.

156090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 156090.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3609 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (8778).

2156090 is an apocalyptic number.

156090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210672).

156090 is an abundant number, since it is smaller than the sum of its proper divisors (265254).

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

156090 is a wasteful number, since it uses less digits than its factorization.

156090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 156090 is about 395.0822699135. The cubic root of 156090 is about 53.8424764626.

It can be divided in two parts, 15 and 6090, that added together give a triangular number (6105 = T110).

The spelling of 156090 in words is "one hundred fifty-six thousand, ninety".