20387192 has 32 divisors (see below), whose sum is σ = 44517600. Its totient is φ = 8571264.

The previous prime is 20387179. The next prime is 20387197. The reversal of 20387192 is 29178302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387197) 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 7 ways as a sum of consecutive naturals, for example, 467 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (1391175).

Almost surely, 2^20387192 is an apocalyptic number.

It is an amenable number.

20387192 is an abundant number, since it is smaller than the sum of its proper divisors (24130408).

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

20387192 is a wasteful number, since it uses less digits than its factorization.

20387192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935 (or 6931 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 20387192 is about 4515.2178242029. The cubic root of 20387192 is about 273.1822458017.

The spelling of 20387192 in words is "twenty million, three hundred eighty-seven thousand, one hundred ninety-two".