20373890 has 32 divisors (see below), whose sum is σ = 38905920. Its totient is φ = 7660224.

The previous prime is 20373887. The next prime is 20373911. The reversal of 20373890 is 9837302.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29489 + ... + 30171.

It is an arithmetic number, because the mean of its divisors is an integer number (1215810).

Almost surely, 2^20373890 is an apocalyptic number.

20373890 is a deficient number, since it is larger than the sum of its proper divisors (18532030).

20373890 is a wasteful number, since it uses less digits than its factorization.

20373890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20373890 is about 4513.7445652141. The cubic root of 20373890 is about 273.1228186076.

The spelling of 20373890 in words is "twenty million, three hundred seventy-three thousand, eight hundred ninety".