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997793792 = 2133492
BaseRepresentation
bin111011011110010…
…010000000000000
32120112112011202122
4323132102000000
54020413400132
6243002103412
733504051542
oct7336220000
92515464678
10997793792
11472257276
1223a1aab68
1312b946c38
1496735692
155c8e7912
hex3b792000

997793792 has 42 divisors (see below), whose sum is σ = 2001199833. Its totient is φ = 497467392.

The previous prime is 997793791. The next prime is 997793803. The reversal of 997793792 is 297397799.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 939790336 + 58003456 = 30656^2 + 7616^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=22336.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997793791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2858834 + ... + 2859182.

Almost surely, 2997793792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997793792

997793792 is an abundant number, since it is smaller than the sum of its proper divisors (1003406041).

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

997793792 is an frugal number, since it uses more digits than its factorization.

997793792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 351 counting only the distinct ones).

The product of its digits is 13502538, while the sum is 62.

The square root of 997793792 is about 31587.8741291655. The cubic root of 997793792 is about 999.2640558524.

The spelling of 997793792 in words is "nine hundred ninety-seven million, seven hundred ninety-three thousand, seven hundred ninety-two".