Search a number
-
+
15389124 = 2231282427
BaseRepresentation
bin111010101101…
…000111000100
31001221211220120
4322231013010
512414422444
61305501540
7244543152
oct72550704
931854816
1015389124
118761093
1251a18b0
13325a7ba
1420883d2
15153eb19
hexead1c4

15389124 has 12 divisors (see below), whose sum is σ = 35907984. Its totient is φ = 5129704.

The previous prime is 15389123. The next prime is 15389137. The reversal of 15389124 is 42198351.

15389124 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (15389123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641202 + ... + 641225.

It is an arithmetic number, because the mean of its divisors is an integer number (2992332).

Almost surely, 215389124 is an apocalyptic number.

It is an amenable number.

15389124 is an abundant number, since it is smaller than the sum of its proper divisors (20518860).

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

15389124 is a wasteful number, since it uses less digits than its factorization.

15389124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282434 (or 1282432 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 15389124 is about 3922.8973986073. The cubic root of 15389124 is about 248.7356107263.

The spelling of 15389124 in words is "fifteen million, three hundred eighty-nine thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 12 1282427 2564854 3847281 5129708 7694562 15389124