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768862028 = 221117474137
BaseRepresentation
bin101101110100111…
…110011101001100
31222120202020102102
4231310332131030
53033312041103
6204143214232
725024135154
oct5564763514
91876666372
10768862028
11365003470
121955a7378
13c339cc5c
1474181764
1547775e88
hex2dd3e74c

768862028 has 12 divisors (see below), whose sum is σ = 1467827592. Its totient is φ = 349482720.

The previous prime is 768862027. The next prime is 768862033. The reversal of 768862028 is 820268867.

It is a super-4 number, since 4×7688620284 (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (768862027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8737025 + ... + 8737112.

It is an arithmetic number, because the mean of its divisors is an integer number (122318966).

Almost surely, 2768862028 is an apocalyptic number.

It is an amenable number.

768862028 is a deficient number, since it is larger than the sum of its proper divisors (698965564).

768862028 is a wasteful number, since it uses less digits than its factorization.

768862028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17474152 (or 17474150 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 768862028 is about 27728.3614373443. The cubic root of 768862028 is about 916.1138963909.

The spelling of 768862028 in words is "seven hundred sixty-eight million, eight hundred sixty-two thousand, twenty-eight".

Divisors: 1 2 4 11 22 44 17474137 34948274 69896548 192215507 384431014 768862028