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70880 = 255443
BaseRepresentation
bin10001010011100000
310121020012
4101103200
54232010
61304052
7413435
oct212340
9117205
1070880
1149287
1235028
1326354
141bb8c
1516005
hex114e0

70880 has 24 divisors (see below), whose sum is σ = 167832. Its totient is φ = 28288.

The previous prime is 70879. The next prime is 70891. The reversal of 70880 is 8807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62 + ... + 381.

It is an arithmetic number, because the mean of its divisors is an integer number (6993).

270880 is an apocalyptic number.

It is an amenable number.

70880 is an abundant number, since it is smaller than the sum of its proper divisors (96952).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83916).

70880 is a wasteful number, since it uses less digits than its factorization.

70880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 70880 is about 266.2329806767. The cubic root of 70880 is about 41.3848357883.

The spelling of 70880 in words is "seventy thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 443 886 1772 2215 3544 4430 7088 8860 14176 17720 35440 70880