20247532 has 6 divisors (see below), whose sum is σ = 35433188. Its totient is φ = 10123764.

The previous prime is 20247529. The next prime is 20247541. The reversal of 20247532 is 23574202.

It is a junction number, because it is equal to n+sod(n) for n = 20247497 and 20247506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530938 + ... + 2530945.

Almost surely, 2^20247532 is an apocalyptic number.

It is an amenable number.

20247532 is a deficient number, since it is larger than the sum of its proper divisors (15185656).

20247532 is a wasteful number, since it uses less digits than its factorization.

20247532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061887 (or 5061885 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20247532 is about 4499.7257694220. The cubic root of 20247532 is about 272.5570152561.

The spelling of 20247532 in words is "twenty million, two hundred forty-seven thousand, five hundred thirty-two".