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1291296 = 25313451
BaseRepresentation
bin100111011010000100000
32102121022210
410323100200
5312310141
643402120
713655466
oct4732040
92377283
101291296
11802196
12523340
133629a6
14258836
151a7916
hex13b420

1291296 has 24 divisors (see below), whose sum is σ = 3389904. Its totient is φ = 430400.

The previous prime is 1291271. The next prime is 1291313. The reversal of 1291296 is 6921921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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, 6630 + ... + 6821.

It is an arithmetic number, because the mean of its divisors is an integer number (141246).

21291296 is an apocalyptic number.

1291296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1291296 is an abundant number, since it is smaller than the sum of its proper divisors (2098608).

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

1291296 is a wasteful number, since it uses less digits than its factorization.

1291296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13464 (or 13456 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 1291296 is about 1136.3520581228. The cubic root of 1291296 is about 108.8951661582.

The spelling of 1291296 in words is "one million, two hundred ninety-one thousand, two hundred ninety-six".