20214340 has 12 divisors (see below), whose sum is σ = 42450156. Its totient is φ = 8085728.

The previous prime is 20214329. The next prime is 20214373. The reversal of 20214340 is 4341202.

It can be written as a sum of positive squares in 2 ways, for example, as 7354944 + 12859396 = 2712^2 + 3586^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505339 + ... + 505378.

It is an arithmetic number, because the mean of its divisors is an integer number (3537513).

Almost surely, 2^20214340 is an apocalyptic number.

20214340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20214340 is an abundant number, since it is smaller than the sum of its proper divisors (22235816).

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

20214340 is a wasteful number, since it uses less digits than its factorization.

20214340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010726 (or 1010724 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20214340 is about 4496.0360318841. The cubic root of 20214340 is about 272.4079985691.

Adding to 20214340 its reverse (4341202), we get a palindrome (24555542).

The spelling of 20214340 in words is "twenty million, two hundred fourteen thousand, three hundred forty".