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4070 = 251137

4070 has 16 divisors (see below), whose sum is σ = 8208. Its totient is φ = 1440.

The previous prime is 4057. The next prime is 4073. The reversal of 4070 is 704.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a plaindrome in base 14.

It is a nialpdrome in base 9 and base 16.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4073) by changing a digit.

4070 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92 + ... + 128.

It is an arithmetic number, because the mean of its divisors is an integer number (513).

4070 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4104).

4070 is a wasteful number, since it uses less digits than its factorization.

4070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55.

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 4070 is about 63.7965516309. The cubic root of 4070 is about 15.9660739481.

Adding to 4070 its reverse (704), we get a palindrome (4774).

The spelling of 4070 in words is "four thousand, seventy", and thus it is an iban number.

Divisors: 1 2 5 10 11 22 37 55 74 110 185 370 407 814 2035 4070