20497488 has 40 divisors (see below), whose sum is σ = 57767136. Its totient is φ = 6211200.

The previous prime is 20497481. The next prime is 20497553. The reversal of 20497488 is 88479402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20497481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18883 + ... + 19938.

Almost surely, 2^20497488 is an apocalyptic number.

It is an amenable number.

20497488 is an abundant number, since it is smaller than the sum of its proper divisors (37269648).

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

20497488 is a wasteful number, since it uses less digits than its factorization.

20497488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38843 (or 38837 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 20497488 is about 4527.4151565767. The cubic root of 20497488 is about 273.6740044673.

The spelling of 20497488 in words is "twenty million, four hundred ninety-seven thousand, four hundred eighty-eight".