19707070 has 16 divisors (see below), whose sum is σ = 35527248. Its totient is φ = 7870720.

The previous prime is 19707049. The next prime is 19707073. The reversal of 19707070 is 7070791.

19707070 is nontrivially palindromic in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19707073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8430 + ... + 10510.

It is an arithmetic number, because the mean of its divisors is an integer number (2220453).

Almost surely, 2^19707070 is an apocalyptic number.

19707070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19707070 is a deficient number, since it is larger than the sum of its proper divisors (15820178).

19707070 is a wasteful number, since it uses less digits than its factorization.

19707070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035.

The product of its (nonzero) digits is 3087, while the sum is 31.

The square root of 19707070 is about 4439.2645787337. The cubic root of 19707070 is about 270.1100146094.

The spelling of 19707070 in words is "nineteen million, seven hundred seven thousand, seventy".