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15132490 = 252952181
BaseRepresentation
bin111001101110…
…011101001010
31001110210212121
4321232131022
512333214430
61300201454
7242424022
oct71563512
931423777
1015132490
1185a629a
12509928a
13319aa49
14201ca82
1514dda7a
hexe6e74a

15132490 has 16 divisors (see below), whose sum is σ = 28178280. Its totient is φ = 5844160.

The previous prime is 15132473. The next prime is 15132521. The reversal of 15132490 is 9423151.

It can be written as a sum of positive squares in 4 ways, for example, as 9066121 + 6066369 = 3011^2 + 2463^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25801 + ... + 26380.

Almost surely, 215132490 is an apocalyptic number.

15132490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15132490 is a deficient number, since it is larger than the sum of its proper divisors (13045790).

15132490 is a wasteful number, since it uses less digits than its factorization.

15132490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52217.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 15132490 is about 3890.0501282117. The cubic root of 15132490 is about 247.3451876792.

The spelling of 15132490 in words is "fifteen million, one hundred thirty-two thousand, four hundred ninety".

Divisors: 1 2 5 10 29 58 145 290 52181 104362 260905 521810 1513249 3026498 7566245 15132490