20350470 has 32 divisors (see below), whose sum is σ = 55819008. Its totient is φ = 4651488.

The previous prime is 20350439. The next prime is 20350471. The reversal of 20350470 is 7405302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350471) 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, 48244 + ... + 48663.

It is an arithmetic number, because the mean of its divisors is an integer number (1744344).

Almost surely, 2^20350470 is an apocalyptic number.

20350470 is an abundant number, since it is smaller than the sum of its proper divisors (35468538).

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

20350470 is a wasteful number, since it uses less digits than its factorization.

20350470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96924.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 20350470 is about 4511.1495209093. The cubic root of 20350470 is about 273.0181259685.

Adding to 20350470 its reverse (7405302), we get a palindrome (27755772).

The spelling of 20350470 in words is "twenty million, three hundred fifty thousand, four hundred seventy".