20413470 has 64 divisors (see below), whose sum is σ = 61088256. Its totient is φ = 4241280.

The previous prime is 20413457. The next prime is 20413499. The reversal of 20413470 is 7431402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2109 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (954504).

Almost surely, 2^20413470 is an apocalyptic number.

20413470 is an abundant number, since it is smaller than the sum of its proper divisors (40674786).

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

20413470 is a wasteful number, since it uses less digits than its factorization.

20413470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20413470 is about 4518.1268242492. The cubic root of 20413470 is about 273.2995678431.

Adding to 20413470 its reverse (7431402), we get a palindrome (27844872).

The spelling of 20413470 in words is "twenty million, four hundred thirteen thousand, four hundred seventy".