16420470 has 64 divisors (see below), whose sum is σ = 45536256. Its totient is φ = 3745280.

The previous prime is 16420463. The next prime is 16420507. The reversal of 16420470 is 7402461.

It is a self number, because there is not a number n which added to its sum of digits gives 16420470.

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, 4147 + ... + 7073.

It is an arithmetic number, because the mean of its divisors is an integer number (711504).

Almost surely, 2^16420470 is an apocalyptic number.

16420470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16420470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22768128).

16420470 is an abundant number, since it is smaller than the sum of its proper divisors (29115786).

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

16420470 is a wasteful number, since it uses less digits than its factorization.

16420470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965.

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

The square root of 16420470 is about 4052.2179112185. The cubic root of 16420470 is about 254.1724808608.

Subtracting from 16420470 its reverse (7402461), we obtain a square (9018009 = 3003²).

The spelling of 16420470 in words is "sixteen million, four hundred twenty thousand, four hundred seventy".