20371497 has 8 divisors (see below), whose sum is σ = 27896256. Its totient is φ = 13213872.

The previous prime is 20371469. The next prime is 20371501. The reversal of 20371497 is 79417302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20371497 - 2¹⁰ = 20370473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20371447) 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, 91653 + ... + 91874.

It is an arithmetic number, because the mean of its divisors is an integer number (3487032).

Almost surely, 2^20371497 is an apocalyptic number.

It is an amenable number.

20371497 is a deficient number, since it is larger than the sum of its proper divisors (7524759).

20371497 is a wasteful number, since it uses less digits than its factorization.

20371497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183567.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 20371497 is about 4513.4794781853. The cubic root of 20371497 is about 273.1121250435.

Adding to 20371497 its reverse (79417302), we get a palindrome (99788799).

The spelling of 20371497 in words is "twenty million, three hundred seventy-one thousand, four hundred ninety-seven".