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1950728 = 231318757
BaseRepresentation
bin111011100010000001000
310200002220012
413130100020
5444410403
6105451052
722403153
oct7342010
93602805
101950728
11111267a
127a0a88
13533ba0
1438ac9a
15287ed8
hex1dc408

1950728 has 16 divisors (see below), whose sum is σ = 3939180. Its totient is φ = 900288.

The previous prime is 1950703. The next prime is 1950757. The reversal of 1950728 is 8270591.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 40804 = 1382^2 + 202^2 .

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1950694 and 1950703.

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, 9275 + ... + 9482.

21950728 is an apocalyptic number.

It is an amenable number.

1950728 is an abundant number, since it is smaller than the sum of its proper divisors (1988452).

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

1950728 is a wasteful number, since it uses less digits than its factorization.

1950728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18776 (or 18772 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1950728 is about 1396.6846458668. The cubic root of 1950728 is about 124.9488430666.

The spelling of 1950728 in words is "one million, nine hundred fifty thousand, seven hundred twenty-eight".

Divisors: 1 2 4 8 13 26 52 104 18757 37514 75028 150056 243841 487682 975364 1950728