19770942 has 16 divisors (see below), whose sum is σ = 39586320. Its totient is φ = 6582912.

The previous prime is 19770941. The next prime is 19770967. The reversal of 19770942 is 24907791.

It is a self number, because there is not a number n which added to its sum of digits gives 19770942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19770941) 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, 7828 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (2474145).

Almost surely, 2^19770942 is an apocalyptic number.

19770942 is an abundant number, since it is smaller than the sum of its proper divisors (19815378).

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

19770942 is a wasteful number, since it uses less digits than its factorization.

19770942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 19770942 is about 4446.4527434799. The cubic root of 19770942 is about 270.4015150966.

The spelling of 19770942 in words is "nineteen million, seven hundred seventy thousand, nine hundred forty-two".