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13872880 = 245723539
BaseRepresentation
bin110100111010…
…111011110000
3222002211000101
4310322323300
512022413010
61213202144
7225626500
oct64727360
928084011
1013872880
11791599a
124790354
132b49608
141bb1a00
15134073a
hexd3aef0

13872880 has 60 divisors (see below), whose sum is σ = 37531080. Its totient is φ = 4755072.

The previous prime is 13872877. The next prime is 13872889. The reversal of 13872880 is 8827831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2151 + ... + 5689.

It is an arithmetic number, because the mean of its divisors is an integer number (625518).

Almost surely, 213872880 is an apocalyptic number.

13872880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13872880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18765540).

13872880 is an abundant number, since it is smaller than the sum of its proper divisors (23658200).

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

13872880 is a wasteful number, since it uses less digits than its factorization.

13872880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3553 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 13872880 is about 3724.6315253995. The cubic root of 13872880 is about 240.2825376252.

The spelling of 13872880 in words is "thirteen million, eight hundred seventy-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 70 80 98 112 140 196 245 280 392 490 560 784 980 1960 3539 3920 7078 14156 17695 24773 28312 35390 49546 56624 70780 99092 123865 141560 173411 198184 247730 283120 346822 396368 495460 693644 867055 990920 1387288 1734110 1981840 2774576 3468220 6936440 13872880