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28379607 = 39459869
BaseRepresentation
bin110110001000…
…0100111010111
31222101211111120
41230100213113
524231121412
62452135023
7463136244
oct154204727
958354446
1028379607
1115024023
129607473
135b58589
143aaa5cb
152758b8c
hex1b109d7

28379607 has 4 divisors (see below), whose sum is σ = 37839480. Its totient is φ = 18919736.

The previous prime is 28379573. The next prime is 28379641. The reversal of 28379607 is 70697382.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28379573) and next prime (28379641).

It is a cyclic number.

It is not a de Polignac number, because 28379607 - 26 = 28379543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28379207) 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, 4729932 + ... + 4729937.

It is an arithmetic number, because the mean of its divisors is an integer number (9459870).

Almost surely, 228379607 is an apocalyptic number.

28379607 is a deficient number, since it is larger than the sum of its proper divisors (9459873).

28379607 is an equidigital number, since it uses as much as digits as its factorization.

28379607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459872.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 28379607 is about 5327.2513550611. The cubic root of 28379607 is about 305.0250163123.

The spelling of 28379607 in words is "twenty-eight million, three hundred seventy-nine thousand, six hundred seven".

Divisors: 1 3 9459869 28379607