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28092667 = 413831789
BaseRepresentation
bin110101100101…
…0100011111011
31221212020220011
41223022203323
524142431132
62442042351
7460532551
oct153124373
957766804
1028092667
1114948489
1294a93b7
135a87aa5
143a33bd1
1526edb47
hex1aca8fb

28092667 has 8 divisors (see below), whose sum is σ = 28869120. Its totient is φ = 27320640.

The previous prime is 28092661. The next prime is 28092671. The reversal of 28092667 is 76629082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28092667 - 27 = 28092539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28092661) 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, 14809 + ... + 16597.

It is an arithmetic number, because the mean of its divisors is an integer number (3608640).

Almost surely, 228092667 is an apocalyptic number.

28092667 is a deficient number, since it is larger than the sum of its proper divisors (776453).

28092667 is a wasteful number, since it uses less digits than its factorization.

28092667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 28092667 is about 5300.2515978017. The cubic root of 28092667 is about 303.9935183002.

It can be divided in two parts, 2809 and 2667, that added together give a square (5476 = 742).

The spelling of 28092667 in words is "twenty-eight million, ninety-two thousand, six hundred sixty-seven".

Divisors: 1 41 383 1789 15703 73349 685187 28092667