20380674 has 16 divisors (see below), whose sum is σ = 40814208. Its totient is φ = 6784752.

The previous prime is 20380643. The next prime is 20380681. The reversal of 20380674 is 47608302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4279 + ... + 7685.

It is an arithmetic number, because the mean of its divisors is an integer number (2550888).

Almost surely, 2^20380674 is an apocalyptic number.

20380674 is an abundant number, since it is smaller than the sum of its proper divisors (20433534).

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

20380674 is a wasteful number, since it uses less digits than its factorization.

20380674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4409.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20380674 is about 4514.4959851571. The cubic root of 20380674 is about 273.1531296182.

Adding to 20380674 its reverse (47608302), we get a palindrome (67988976).

The spelling of 20380674 in words is "twenty million, three hundred eighty thousand, six hundred seventy-four".