20055470 has 8 divisors (see below), whose sum is σ = 36099864. Its totient is φ = 8022184.

The previous prime is 20055467. The next prime is 20055473. The reversal of 20055470 is 7455002.

It is an interprime number because it is at equal distance from previous prime (20055467) and next prime (20055473).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002764 + ... + 1002783.

It is an arithmetic number, because the mean of its divisors is an integer number (4512483).

Almost surely, 2^20055470 is an apocalyptic number.

20055470 is a deficient number, since it is larger than the sum of its proper divisors (16044394).

20055470 is a wasteful number, since it uses less digits than its factorization.

20055470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005554.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20055470 is about 4478.3333953604. Note that the first 4 decimals coincide. The cubic root of 20055470 is about 271.6924779236.

The spelling of 20055470 in words is "twenty million, fifty-five thousand, four hundred seventy".