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7997796 = 2232222161
BaseRepresentation
bin11110100000100101100100
3120001022220200
4132200211210
54021412141
6443230500
7124660122
oct36404544
916038820
107997796
114572954
122818430
131870431
1410c2912
15a7eab6
hex7a0964

7997796 has 18 divisors (see below), whose sum is σ = 20216742. Its totient is φ = 2665920.

The previous prime is 7997789. The next prime is 7997831. The reversal of 7997796 is 6977997.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 1028196 = 2640^2 + 1014^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111045 + ... + 111116.

Almost surely, 27997796 is an apocalyptic number.

It is an amenable number.

7997796 is an abundant number, since it is smaller than the sum of its proper divisors (12218946).

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

7997796 is a wasteful number, since it uses less digits than its factorization.

7997796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222171 (or 222166 counting only the distinct ones).

The product of its digits is 1500282, while the sum is 54.

The square root of 7997796 is about 2828.0374820713. The cubic root of 7997796 is about 199.9816316464.

The spelling of 7997796 in words is "seven million, nine hundred ninety-seven thousand, seven hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 36 222161 444322 666483 888644 1332966 1999449 2665932 3998898 7997796