20297634 has 32 divisors (see below), whose sum is σ = 47477760. Its totient is φ = 5663952.

The previous prime is 20297633. The next prime is 20297647. The reversal of 20297634 is 43679202.

It is a junction number, because it is equal to n+sod(n) for n = 20297595 and 20297604.

It is not an unprimeable number, because it can be changed into a prime (20297633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3814 + ... + 7425.

It is an arithmetic number, because the mean of its divisors is an integer number (1483680).

Almost surely, 2^20297634 is an apocalyptic number.

20297634 is an abundant number, since it is smaller than the sum of its proper divisors (27180126).

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

20297634 is a wasteful number, since it uses less digits than its factorization.

20297634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11294.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 20297634 is about 4505.2895578420. The cubic root of 20297634 is about 272.7816418677.

The spelling of 20297634 in words is "twenty million, two hundred ninety-seven thousand, six hundred thirty-four".