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8202428 = 2213157739
BaseRepresentation
bin11111010010100010111100
3120102201121122
4133102202330
54044434203
6451450112
7126501533
oct37224274
916381548
108202428
1146a2673
1228b6938
131912610
14113731a
15ac0538
hex7d28bc

8202428 has 12 divisors (see below), whose sum is σ = 15458520. Its totient is φ = 3785712.

The previous prime is 8202427. The next prime is 8202431. The reversal of 8202428 is 8242028.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 8202397 and 8202406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8202427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78818 + ... + 78921.

It is an arithmetic number, because the mean of its divisors is an integer number (1288210).

Almost surely, 28202428 is an apocalyptic number.

It is an amenable number.

8202428 is a deficient number, since it is larger than the sum of its proper divisors (7256092).

8202428 is a wasteful number, since it uses less digits than its factorization.

8202428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157756 (or 157754 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 8202428 is about 2863.9881284670. The cubic root of 8202428 is about 201.6728685417.

The spelling of 8202428 in words is "eight million, two hundred two thousand, four hundred twenty-eight".

Divisors: 1 2 4 13 26 52 157739 315478 630956 2050607 4101214 8202428