20671354 has 32 divisors (see below), whose sum is σ = 37713600. Its totient is φ = 8375040.

The previous prime is 20671331. The next prime is 20671361. The reversal of 20671354 is 45317602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5652 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (1178550).

Almost surely, 2^20671354 is an apocalyptic number.

20671354 is a deficient number, since it is larger than the sum of its proper divisors (17042246).

20671354 is a wasteful number, since it uses less digits than its factorization.

20671354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20671354 is about 4546.5760743663. The cubic root of 20671354 is about 274.4456225655.

Adding to 20671354 its reverse (45317602), we get a palindrome (65988956).

It can be divided in two parts, 20671 and 354, that added together give a square (21025 = 145²).

The spelling of 20671354 in words is "twenty million, six hundred seventy-one thousand, three hundred fifty-four".