20570298 has 96 divisors (see below), whose sum is σ = 51568128. Its totient is φ = 5443200.

The previous prime is 20570287. The next prime is 20570299. The reversal of 20570298 is 89207502.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20570299) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 337188 + ... + 337248.

It is an arithmetic number, because the mean of its divisors is an integer number (537168).

Almost surely, 2^20570298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20570298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25784064).

20570298 is an abundant number, since it is smaller than the sum of its proper divisors (30997830).

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

20570298 is a wasteful number, since it uses less digits than its factorization.

20570298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 20570298 is about 4535.4490406133. The cubic root of 20570298 is about 273.9976645689.

The spelling of 20570298 in words is "twenty million, five hundred seventy thousand, two hundred ninety-eight".