20107480 has 16 divisors (see below), whose sum is σ = 45241920. Its totient is φ = 8042976.

The previous prime is 20107463. The next prime is 20107519. The reversal of 20107480 is 8470102.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 251304 + ... + 251383.

It is an arithmetic number, because the mean of its divisors is an integer number (2827620).

Almost surely, 2^20107480 is an apocalyptic number.

20107480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20107480 is an abundant number, since it is smaller than the sum of its proper divisors (25134440).

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

20107480 is a wasteful number, since it uses less digits than its factorization.

20107480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502698 (or 502694 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20107480 is about 4484.1364832039. The cubic root of 20107480 is about 271.9271359037.

Adding to 20107480 its reverse (8470102), we get a palindrome (28577582).

The spelling of 20107480 in words is "twenty million, one hundred seven thousand, four hundred eighty".