Search a number
-
+
23706740 = 2251185337
BaseRepresentation
bin101101001101…
…1110001110100
31122121102112102
41122123301310
522032103430
62204041232
7405334601
oct132336164
948542472
1023706740
1112422252
127b33218
134bb0675
1432116a8
152134345
hex169bc74

23706740 has 12 divisors (see below), whose sum is σ = 49784196. Its totient is φ = 9482688.

The previous prime is 23706713. The next prime is 23706763. The reversal of 23706740 is 4760732.

It can be written as a sum of positive squares in 2 ways, for example, as 10471696 + 13235044 = 3236^2 + 3638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592649 + ... + 592688.

It is an arithmetic number, because the mean of its divisors is an integer number (4148683).

Almost surely, 223706740 is an apocalyptic number.

23706740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23706740 is an abundant number, since it is smaller than the sum of its proper divisors (26077456).

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

23706740 is a wasteful number, since it uses less digits than its factorization.

23706740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185346 (or 1185344 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 23706740 is about 4868.9567671114. The cubic root of 23706740 is about 287.2702234636.

The spelling of 23706740 in words is "twenty-three million, seven hundred six thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 1185337 2370674 4741348 5926685 11853370 23706740