Search a number
137798645 = 5233311813
BaseRepresentation
bin10000011011010…
…10001111110101
3100121021220012112
420031222033311
5240234024040
621401300405
73262161215
oct1015521765
9317256175
10137798645
1170869186
123a194705
132271937a
1414430245
15c16e365
hex836a3f5

137798645 has 8 divisors (see below), whose sum is σ = 165443256. Its totient is φ = 110182336.

The previous prime is 137798629. The next prime is 137798657. The reversal of 137798645 is 546897731.

It can be written as a sum of positive squares in 4 ways, for example, as 4765489 + 133033156 = 2183^2 + 11534^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 137798645 - 24 = 137798629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137798593 and 137798602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5759 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (20680407).

Almost surely, 2137798645 is an apocalyptic number.

It is an amenable number.

137798645 is a deficient number, since it is larger than the sum of its proper divisors (27644611).

137798645 is a wasteful number, since it uses less digits than its factorization.

137798645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14151.

The product of its digits is 1270080, while the sum is 50.

The square root of 137798645 is about 11738.7667580543. The cubic root of 137798645 is about 516.5134666605.

The spelling of 137798645 in words is "one hundred thirty-seven million, seven hundred ninety-eight thousand, six hundred forty-five".