20373690 has 16 divisors (see below), whose sum is σ = 48896928. Its totient is φ = 5432976.

The previous prime is 20373673. The next prime is 20373697. The reversal of 20373690 is 9637302.

It is a happy number.

It is a super-2 number, since 2×20373690² = 830174488432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 679123 = 20373690 / (2 + 0 + 3 + 7 + 3 + 6 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (20373697) 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, 339532 + ... + 339591.

It is an arithmetic number, because the mean of its divisors is an integer number (3056058).

Almost surely, 2^20373690 is an apocalyptic number.

20373690 is an abundant number, since it is smaller than the sum of its proper divisors (28523238).

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

20373690 is a wasteful number, since it uses less digits than its factorization.

20373690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679133.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 20373690 is about 4513.7224106052. The cubic root of 20373690 is about 273.1219249026.

The spelling of 20373690 in words is "twenty million, three hundred seventy-three thousand, six hundred ninety".