20622040 has 32 divisors (see below), whose sum is σ = 46746000. Its totient is φ = 8187264.

The previous prime is 20622029. The next prime is 20622059. The reversal of 20622040 is 4022602.

It is a congruent number.

It is an unprimeable number.

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, 3706 + ... + 7414.

Almost surely, 2^20622040 is an apocalyptic number.

20622040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20622040 is an abundant number, since it is smaller than the sum of its proper divisors (26123960).

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

20622040 is a wasteful number, since it uses less digits than its factorization.

20622040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859 (or 3855 counting only the distinct ones).

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

The square root of 20622040 is about 4541.1496341786. The cubic root of 20622040 is about 274.2272077799.

Adding to 20622040 its reverse (4022602), we get a palindrome (24644642).

The spelling of 20622040 in words is "twenty million, six hundred twenty-two thousand, forty".