19940370 has 16 divisors (see below), whose sum is σ = 47856960. Its totient is φ = 5317424.

The previous prime is 19940369. The next prime is 19940377. The reversal of 19940370 is 7304991.

It is not an unprimeable number, because it can be changed into a prime (19940377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332310 + ... + 332369.

It is an arithmetic number, because the mean of its divisors is an integer number (2991060).

Almost surely, 2^19940370 is an apocalyptic number.

19940370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19940370 is an abundant number, since it is smaller than the sum of its proper divisors (27916590).

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

19940370 is a wasteful number, since it uses less digits than its factorization.

19940370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664689.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 19940370 is about 4465.4641416095. The cubic root of 19940370 is about 271.1717252394.

The spelling of 19940370 in words is "nineteen million, nine hundred forty thousand, three hundred seventy".