19701070 has 16 divisors (see below), whose sum is σ = 35633808. Its totient is φ = 7842240.

The previous prime is 19701061. The next prime is 19701091. The reversal of 19701070 is 7010791.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2559 + ... + 6778.

It is an arithmetic number, because the mean of its divisors is an integer number (2227113).

Almost surely, 2^19701070 is an apocalyptic number.

19701070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19701070 is a deficient number, since it is larger than the sum of its proper divisors (15932738).

19701070 is a wasteful number, since it uses less digits than its factorization.

19701070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9555.

The product of its (nonzero) digits is 441, while the sum is 25.

The square root of 19701070 is about 4438.5887396784. The cubic root of 19701070 is about 270.0825993283.

The spelling of 19701070 in words is "nineteen million, seven hundred one thousand, seventy".