20249476 has 24 divisors (see below), whose sum is σ = 39824064. Its totient is φ = 8939040.

The previous prime is 20249443. The next prime is 20249501. The reversal of 20249476 is 67494202.

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, 7270 + ... + 9661.

It is an arithmetic number, because the mean of its divisors is an integer number (1659336).

Almost surely, 2^20249476 is an apocalyptic number.

20249476 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20249476 is a deficient number, since it is larger than the sum of its proper divisors (19574588).

20249476 is a wasteful number, since it uses less digits than its factorization.

20249476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16971 (or 16969 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20249476 is about 4499.9417774011. The cubic root of 20249476 is about 272.5657378646.

The spelling of 20249476 in words is "twenty million, two hundred forty-nine thousand, four hundred seventy-six".