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253868800 = 285239667
BaseRepresentation
bin11110010000110…
…11101100000000
3122200200212112011
433020123230000
51004442300200
641105142304
76201564163
oct1710335400
9580625464
10253868800
11120336429
127102a994
1340798633
1425a05ada
151744a5ba
hexf21bb00

253868800 has 54 divisors (see below), whose sum is σ = 628380788. Its totient is φ = 101544960.

The previous prime is 253868777. The next prime is 253868801. The reversal of 253868800 is 8868352.

It is a super-2 number, since 2×2538688002 = 128898735226880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (253868801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13434 + ... + 26233.

Almost surely, 2253868800 is an apocalyptic number.

253868800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253868800 is an abundant number, since it is smaller than the sum of its proper divisors (374511988).

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

253868800 is an equidigital number, since it uses as much as digits as its factorization.

253868800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39693 (or 39674 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 253868800 is about 15933.2608087610. The cubic root of 253868800 is about 633.1934932869.

The spelling of 253868800 in words is "two hundred fifty-three million, eight hundred sixty-eight thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 640 800 1280 1600 3200 6400 39667 79334 158668 198335 317336 396670 634672 793340 991675 1269344 1586680 1983350 2538688 3173360 3966700 5077376 6346720 7933400 10154752 12693440 15866800 25386880 31733600 50773760 63467200 126934400 253868800