20416470 has 32 divisors (see below), whose sum is σ = 49144320. Its totient is φ = 5428320.

The previous prime is 20416457. The next prime is 20416549. The reversal of 20416470 is 7461402.

It is a self number, because there is not a number n which added to its sum of digits gives 20416470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12141 + ... + 13719.

It is an arithmetic number, because the mean of its divisors is an integer number (1535760).

Almost surely, 2^20416470 is an apocalyptic number.

20416470 is an abundant number, since it is smaller than the sum of its proper divisors (28727850).

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

20416470 is a wasteful number, since it uses less digits than its factorization.

20416470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20416470 is about 4518.4588080451. The cubic root of 20416470 is about 273.3129553848.

Adding to 20416470 its reverse (7461402), we get a palindrome (27877872).

The spelling of 20416470 in words is "twenty million, four hundred sixteen thousand, four hundred seventy".