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15052340 = 2253720341
BaseRepresentation
bin111001011010…
…111000110100
31001022201221002
4321122320310
512323133330
61254342432
7241641242
oct71327064
931281832
1015052340
118551056
12505aa18
133170414
141ddb792
1514c4e45
hexe5ae34

15052340 has 24 divisors (see below), whose sum is σ = 32465832. Its totient is φ = 5857920.

The previous prime is 15052339. The next prime is 15052357. The reversal of 15052340 is 4325051.

It can be written as a sum of positive squares in 4 ways, for example, as 4990756 + 10061584 = 2234^2 + 3172^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9431 + ... + 10910.

It is an arithmetic number, because the mean of its divisors is an integer number (1352743).

Almost surely, 215052340 is an apocalyptic number.

15052340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15052340 is an abundant number, since it is smaller than the sum of its proper divisors (17413492).

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

15052340 is a wasteful number, since it uses less digits than its factorization.

15052340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20387 (or 20385 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 15052340 is about 3879.7345270005. The cubic root of 15052340 is about 246.9077223090.

Adding to 15052340 its reverse (4325051), we get a palindrome (19377391).

The spelling of 15052340 in words is "fifteen million, fifty-two thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 37 74 148 185 370 740 20341 40682 81364 101705 203410 406820 752617 1505234 3010468 3763085 7526170 15052340