19908070 has 64 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 6215040.

The previous prime is 19908059. The next prime is 19908101. The reversal of 19908070 is 7080991.

It is a super-2 number, since 2×19908070² = 792662502249800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119127 + ... + 119293.

It is an arithmetic number, because the mean of its divisors is an integer number (698544).

Almost surely, 2^19908070 is an apocalyptic number.

19908070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19908070 is an abundant number, since it is smaller than the sum of its proper divisors (24798746).

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

19908070 is a wasteful number, since it uses less digits than its factorization.

19908070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

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

The square root of 19908070 is about 4461.8460305125. The cubic root of 19908070 is about 271.0252287892.

The spelling of 19908070 in words is "nineteen million, nine hundred eight thousand, seventy".