Search a number
-
+
15238190 = 25111923317
BaseRepresentation
bin111010001000…
…010000101110
31001200011212102
4322020100232
512400110230
61302335102
7243344132
oct72102056
931604772
1015238190
118668750
12512a492
133206ba6
1420493c2
151510045
hexe8842e

15238190 has 64 divisors (see below), whose sum is σ = 32970240. Its totient is φ = 5005440.

The previous prime is 15238159. The next prime is 15238193. The reversal of 15238190 is 9183251.

It is a super-2 number, since 2×152381902 = 464404868952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15238193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47912 + ... + 48228.

It is an arithmetic number, because the mean of its divisors is an integer number (515160).

Almost surely, 215238190 is an apocalyptic number.

15238190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15238190 is an abundant number, since it is smaller than the sum of its proper divisors (17732050).

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

15238190 is a wasteful number, since it uses less digits than its factorization.

15238190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 15238190 is about 3903.6124295324. The cubic root of 15238190 is about 247.9197516113.

The spelling of 15238190 in words is "fifteen million, two hundred thirty-eight thousand, one hundred ninety".

Divisors: 1 2 5 10 11 19 22 23 38 46 55 95 110 115 190 209 230 253 317 418 437 506 634 874 1045 1265 1585 2090 2185 2530 3170 3487 4370 4807 6023 6974 7291 9614 12046 14582 17435 24035 30115 34870 36455 48070 60230 66253 72910 80201 132506 138529 160402 277058 331265 401005 662530 692645 802010 1385290 1523819 3047638 7619095 15238190