20706470 has 16 divisors (see below), whose sum is σ = 37374480. Its totient is φ = 8259744.

The previous prime is 20706457. The next prime is 20706503. The reversal of 20706470 is 7460702.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229 + ... + 6551.

It is an arithmetic number, because the mean of its divisors is an integer number (2335905).

Almost surely, 2^20706470 is an apocalyptic number.

20706470 is a deficient number, since it is larger than the sum of its proper divisors (16668010).

20706470 is a wasteful number, since it uses less digits than its factorization.

20706470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20706470 is about 4550.4362428233. The cubic root of 20706470 is about 274.6009418598.

It can be divided in two parts, 2070 and 6470, that multiplied together give a triangular number (13392900 = T₅₁₇₅).

The spelling of 20706470 in words is "twenty million, seven hundred six thousand, four hundred seventy".