20461470 has 16 divisors (see below), whose sum is σ = 49107600. Its totient is φ = 5456384.

The previous prime is 20461459. The next prime is 20461487. The reversal of 20461470 is 7416402.

It is a self number, because there is not a number n which added to its sum of digits gives 20461470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340995 + ... + 341054.

It is an arithmetic number, because the mean of its divisors is an integer number (3069225).

Almost surely, 2^20461470 is an apocalyptic number.

20461470 is an abundant number, since it is smaller than the sum of its proper divisors (28646130).

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

20461470 is a wasteful number, since it uses less digits than its factorization.

20461470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682059.

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

The square root of 20461470 is about 4523.4356411913. The cubic root of 20461470 is about 273.5136113240.

Adding to 20461470 its reverse (7416402), we get a palindrome (27877872).

The spelling of 20461470 in words is "twenty million, four hundred sixty-one thousand, four hundred seventy".