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13250072 = 2311172521
BaseRepresentation
bin110010100010…
…111000011000
3220221011200102
4302202320120
511343000242
61151554532
7220423643
oct62427030
926834612
1013250072
11752aa80
12452ba48
13298bca4
141a8ca5a
15126ae32
hexca2e18

13250072 has 48 divisors (see below), whose sum is σ = 28845720. Its totient is φ = 5657600.

The previous prime is 13250009. The next prime is 13250101. The reversal of 13250072 is 27005231.

It is a hoax number, since the sum of its digits (20) 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 11 ways as a sum of consecutive naturals, for example, 25172 + ... + 25692.

Almost surely, 213250072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13250072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14422860).

13250072 is an abundant number, since it is smaller than the sum of its proper divisors (15595648).

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

13250072 is a wasteful number, since it uses less digits than its factorization.

13250072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 13250072 is about 3640.0648345874. The cubic root of 13250072 is about 236.6316031723.

The spelling of 13250072 in words is "thirteen million, two hundred fifty thousand, seventy-two".

Divisors: 1 2 4 8 11 17 22 34 44 68 88 136 187 289 374 521 578 748 1042 1156 1496 2084 2312 3179 4168 5731 6358 8857 11462 12716 17714 22924 25432 35428 45848 70856 97427 150569 194854 301138 389708 602276 779416 1204552 1656259 3312518 6625036 13250072