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672864 = 25343163
BaseRepresentation
bin10100100010001100000
31021011222220
42210101200
5133012424
622231040
75501463
oct2442140
91234886
10672864
1141a595
12285480
131a735a
141372da
15d4579
hexa4460

672864 has 48 divisors (see below), whose sum is σ = 1818432. Its totient is φ = 217728.

The previous prime is 672863. The next prime is 672869. The reversal of 672864 is 468276.

It is a tau number, because it is divible by the number of its divisors (48).

672864 is a modest number, since divided by 864 gives 672 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672863) 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, 4047 + ... + 4209.

It is an arithmetic number, because the mean of its divisors is an integer number (37884).

2672864 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 672864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909216).

672864 is an abundant number, since it is smaller than the sum of its proper divisors (1145568).

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

672864 is a wasteful number, since it uses less digits than its factorization.

672864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 211 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 672864 is about 820.2828780366. The cubic root of 672864 is about 87.6279054567.

The spelling of 672864 in words is "six hundred seventy-two thousand, eight hundred sixty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 43 48 86 96 129 163 172 258 326 344 489 516 652 688 978 1032 1304 1376 1956 2064 2608 3912 4128 5216 7009 7824 14018 15648 21027 28036 42054 56072 84108 112144 168216 224288 336432 672864