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8021028 = 223798461
BaseRepresentation
bin11110100110010000100100
3120002111210010
4132212100210
54023133103
6443530220
7125114631
oct36462044
916074703
108021028
114589354
122829970
13187ab92
1410cb188
15a86903
hex7a6424

8021028 has 24 divisors (see below), whose sum is σ = 18954880. Its totient is φ = 2639520.

The previous prime is 8021017. The next prime is 8021029. The reversal of 8021028 is 8201208.

It is a junction number, because it is equal to n+sod(n) for n = 8020995 and 8021013.

It is not an unprimeable number, because it can be changed into a prime (8021029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3283 + ... + 5178.

Almost surely, 28021028 is an apocalyptic number.

It is an amenable number.

8021028 is an abundant number, since it is smaller than the sum of its proper divisors (10933852).

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

8021028 is a wasteful number, since it uses less digits than its factorization.

8021028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8547 (or 8545 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 8021028 is about 2832.1419455952. The cubic root of 8021028 is about 200.1750800235.

It can be divided in two parts, 802 and 1028, that added together give a triangular number (1830 = T60).

The spelling of 8021028 in words is "eight million, twenty-one thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 79 158 237 316 474 948 8461 16922 25383 33844 50766 101532 668419 1336838 2005257 2673676 4010514 8021028