20706070 has 32 divisors (see below), whose sum is σ = 46469376. Its totient is φ = 6453600.

The previous prime is 20706061. The next prime is 20706071. The reversal of 20706070 is 7060702.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20706071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12676 + ... + 14215.

It is an arithmetic number, because the mean of its divisors is an integer number (1452168).

Almost surely, 2^20706070 is an apocalyptic number.

20706070 is an abundant number, since it is smaller than the sum of its proper divisors (25763306).

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

20706070 is a wasteful number, since it uses less digits than its factorization.

20706070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26916.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 20706070 is about 4550.3922907811. The cubic root of 20706070 is about 274.5991736350.

Adding to 20706070 its reverse (7060702), we get a palindrome (27766772).

The spelling of 20706070 in words is "twenty million, seven hundred six thousand, seventy".