20387010 has 32 divisors (see below), whose sum is σ = 55919232. Its totient is φ = 4659840.

The previous prime is 20386999. The next prime is 20387023. The reversal of 20387010 is 1078302.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 48331 + ... + 48750.

It is an arithmetic number, because the mean of its divisors is an integer number (1747476).

Almost surely, 2^20387010 is an apocalyptic number.

20387010 is an abundant number, since it is smaller than the sum of its proper divisors (35532222).

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

20387010 is a wasteful number, since it uses less digits than its factorization.

20387010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97098.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20387010 is about 4515.1976700915. The cubic root of 20387010 is about 273.1814328842.

The spelling of 20387010 in words is "twenty million, three hundred eighty-seven thousand, ten".