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1220248 = 23152531
BaseRepresentation
bin100101001111010011000
32021222212101
410221322120
5303021443
642053144
713241401
oct4517230
92258771
101220248
11763877
124aa1b4
13339553
1423a9a8
1519184d
hex129e98

1220248 has 8 divisors (see below), whose sum is σ = 2287980. Its totient is φ = 610120.

The previous prime is 1220239. The next prime is 1220249. The reversal of 1220248 is 8420221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) 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 (1220249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76258 + ... + 76273.

21220248 is an apocalyptic number.

It is an amenable number.

1220248 is a deficient number, since it is larger than the sum of its proper divisors (1067732).

1220248 is a wasteful number, since it uses less digits than its factorization.

1220248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152537 (or 152533 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1220248 is about 1104.6483603392. The cubic root of 1220248 is about 106.8602128351.

Adding to 1220248 its reverse (8420221), we get a palindrome (9640469).

The spelling of 1220248 in words is "one million, two hundred twenty thousand, two hundred forty-eight".

Divisors: 1 2 4 8 152531 305062 610124 1220248