19980070 has 32 divisors (see below), whose sum is σ = 39833856. Its totient is φ = 7154400.

The previous prime is 19980061. The next prime is 19980071. The reversal of 19980070 is 7008991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19980071) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6015 + ... + 8725.

It is an arithmetic number, because the mean of its divisors is an integer number (1244808).

Almost surely, 2^19980070 is an apocalyptic number.

19980070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19980070 is a deficient number, since it is larger than the sum of its proper divisors (19853786).

19980070 is a wasteful number, since it uses less digits than its factorization.

19980070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 19980070 is about 4469.9071578725. The cubic root of 19980070 is about 271.3515677883.

It can be divided in two parts, 19 and 980070, that added together give a palindrome (980089).

The spelling of 19980070 in words is "nineteen million, nine hundred eighty thousand, seventy".