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1406980 = 225103683
BaseRepresentation
bin101010111100000000100
32122111000101
411113200010
5330010410
650053444
714646661
oct5274004
92574011
101406980
118810a3
1257a284
133a3543
14288a68
151cbd3a
hex157804

1406980 has 24 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 556512.

The previous prime is 1406959. The next prime is 1406983. The reversal of 1406980 is 896041.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1406983) 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, 1719 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

21406980 is an apocalyptic number.

1406980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406980 is an abundant number, since it is smaller than the sum of its proper divisors (1580732).

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

1406980 is a wasteful number, since it uses less digits than its factorization.

1406980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1406980 is about 1186.1618776541. The cubic root of 1406980 is about 112.0545015353.

The spelling of 1406980 in words is "one million, four hundred six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 103 206 412 515 683 1030 1366 2060 2732 3415 6830 13660 70349 140698 281396 351745 703490 1406980