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15314740 = 2257109391
BaseRepresentation
bin111010011010…
…111100110100
31001211001212121
4322122330310
512410032430
61304125324
7244113250
oct72327464
931731777
1015314740
118710211
125166844
13323299c
142069260
151527a7a
hexe9af34

15314740 has 24 divisors (see below), whose sum is σ = 36755712. Its totient is φ = 5250720.

The previous prime is 15314737. The next prime is 15314749. The reversal of 15314740 is 4741351.

It is a super-2 number, since 2×153147402 = 469082522535200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15314749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54556 + ... + 54835.

It is an arithmetic number, because the mean of its divisors is an integer number (1531488).

Almost surely, 215314740 is an apocalyptic number.

15314740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15314740 is an abundant number, since it is smaller than the sum of its proper divisors (21440972).

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

15314740 is a wasteful number, since it uses less digits than its factorization.

15314740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109407 (or 109405 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 15314740 is about 3913.4051668592. The cubic root of 15314740 is about 248.3342051629.

The spelling of 15314740 in words is "fifteen million, three hundred fourteen thousand, seven hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 109391 218782 437564 546955 765737 1093910 1531474 2187820 3062948 3828685 7657370 15314740