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1297938 = 231371579
BaseRepresentation
bin100111100111000010010
32102221102210
410330320102
5313013223
643452550
714014035
oct4747022
92387383
101297938
11807184
12527156
13365a15
1425b01c
151a9893
hex13ce12

1297938 has 16 divisors (see below), whose sum is σ = 2616480. Its totient is φ = 429216.

The previous prime is 1297927. The next prime is 1297963. The reversal of 1297938 is 8397921.

It is a junction number, because it is equal to n+sod(n) for n = 1297896 and 1297905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (163530).

21297938 is an apocalyptic number.

1297938 is an abundant number, since it is smaller than the sum of its proper divisors (1318542).

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

1297938 is a wasteful number, since it uses less digits than its factorization.

1297938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721.

The product of its digits is 27216, while the sum is 39.

The square root of 1297938 is about 1139.2708194279. The cubic root of 1297938 is about 109.0815538695.

The spelling of 1297938 in words is "one million, two hundred ninety-seven thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 137 274 411 822 1579 3158 4737 9474 216323 432646 648969 1297938