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1228948 = 22743891
BaseRepresentation
bin100101100000010010100
32022102210121
410230002110
5303311243
642201324
713305640
oct4540224
92272717
101228948
1176a366
124b3244
133404b6
1423dc20
151941ed
hex12c094

1228948 has 12 divisors (see below), whose sum is σ = 2457952. Its totient is φ = 526680.

The previous prime is 1228943. The next prime is 1228949. The reversal of 1228948 is 8498221.

1228948 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21918 + ... + 21973.

21228948 is an apocalyptic number.

It is an amenable number.

1228948 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1228948 is a wasteful number, since it uses less digits than its factorization.

1228948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43902 (or 43900 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 1228948 is about 1108.5792709590. The cubic root of 1228948 is about 107.1135720175.

The spelling of 1228948 in words is "one million, two hundred twenty-eight thousand, nine hundred forty-eight".

Divisors: 1 2 4 7 14 28 43891 87782 175564 307237 614474 1228948