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7998948 = 2232222193
BaseRepresentation
bin11110100000110111100100
3120001101111100
4132200313210
54021431243
6443240100
7124663356
oct36406744
916041440
107998948
114573801
122819030
131870b09
1410c30d6
15a800d3
hex7a0de4

7998948 has 18 divisors (see below), whose sum is σ = 20219654. Its totient is φ = 2666304.

The previous prime is 7998941. The next prime is 7998953. The reversal of 7998948 is 8498997.

7998948 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6441444 + 1557504 = 2538^2 + 1248^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7998894 and 7998903.

It is not an unprimeable number, because it can be changed into a prime (7998941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111061 + ... + 111132.

Almost surely, 27998948 is an apocalyptic number.

It is an amenable number.

7998948 is an abundant number, since it is smaller than the sum of its proper divisors (12220706).

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

7998948 is a wasteful number, since it uses less digits than its factorization.

7998948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222203 (or 222198 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 7998948 is about 2828.2411495486. The cubic root of 7998948 is about 199.9912329490.

The spelling of 7998948 in words is "seven million, nine hundred ninety-eight thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 222193 444386 666579 888772 1333158 1999737 2666316 3999474 7998948