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16012357 = 19781281
BaseRepresentation
bin111101000101…
…010001000101
31010010111211021
4331011101011
513044343412
61331111141
7253050154
oct75052105
933114737
1016012357
119047359
1254424b1
13341838a
1421ab59b
151614607
hexf45445

16012357 has 4 divisors (see below), whose sum is σ = 16093836. Its totient is φ = 15930880.

The previous prime is 16012349. The next prime is 16012363. The reversal of 16012357 is 75321061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 401956 = 3951^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 16012357 - 23 = 16012349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16012757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40444 + ... + 40837.

It is an arithmetic number, because the mean of its divisors is an integer number (4023459).

Almost surely, 216012357 is an apocalyptic number.

It is an amenable number.

16012357 is a deficient number, since it is larger than the sum of its proper divisors (81479).

16012357 is an equidigital number, since it uses as much as digits as its factorization.

16012357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81478.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 16012357 is about 4001.5443268818. The cubic root of 16012357 is about 252.0490634712.

The spelling of 16012357 in words is "sixteen million, twelve thousand, three hundred fifty-seven".

Divisors: 1 197 81281 16012357