Search a number
-
+
69240 = 2335577
BaseRepresentation
bin10000111001111000
310111222110
4100321320
54203430
61252320
7405603
oct207170
9114873
1069240
1148026
12340a0
1325692
141b33a
15157b0
hex10e78

69240 has 32 divisors (see below), whose sum is σ = 208080. Its totient is φ = 18432.

The previous prime is 69239. The next prime is 69247. The reversal of 69240 is 4296.

Added to its reverse (4296) it gives a triangular number (73536 = T383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169 + ... + 408.

269240 is an apocalyptic number.

69240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69240 is an abundant number, since it is smaller than the sum of its proper divisors (138840).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104040).

69240 is a wasteful number, since it uses less digits than its factorization.

69240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 69240 is about 263.1349463678. The cubic root of 69240 is about 41.0631586554.

Adding to 69240 its reverse (4296), we get a triangular number (73536 = T383).

The spelling of 69240 in words is "sixty-nine thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 577 1154 1731 2308 2885 3462 4616 5770 6924 8655 11540 13848 17310 23080 34620 69240