Search a number
-
+
15381268 = 227549331
BaseRepresentation
bin111010101011…
…001100010100
31001221110010121
4322223030110
512414200033
61305401324
7244511230
oct72531424
931843117
1015381268
1187561a1
125199244
133257056
1420855c0
15153c62d
hexeab314

15381268 has 12 divisors (see below), whose sum is σ = 30762592. Its totient is φ = 6591960.

The previous prime is 15381259. The next prime is 15381271. The reversal of 15381268 is 86218351.

15381268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

15381268 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 274638 + ... + 274693.

Almost surely, 215381268 is an apocalyptic number.

It is an amenable number.

15381268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15381268 is a wasteful number, since it uses less digits than its factorization.

15381268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549342 (or 549340 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 15381268 is about 3921.8959700635. The cubic root of 15381268 is about 248.6932778085.

The spelling of 15381268 in words is "fifteen million, three hundred eighty-one thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 28 549331 1098662 2197324 3845317 7690634 15381268