20148470 has 16 divisors (see below), whose sum is σ = 36324288. Its totient is φ = 8046720.

The previous prime is 20148449. The next prime is 20148473. The reversal of 20148470 is 7484102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20148473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7667 + ... + 9953.

It is an arithmetic number, because the mean of its divisors is an integer number (2270268).

Almost surely, 2^20148470 is an apocalyptic number.

20148470 is a deficient number, since it is larger than the sum of its proper divisors (16175818).

20148470 is a wasteful number, since it uses less digits than its factorization.

20148470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20148470 is about 4488.7047129434. The cubic root of 20148470 is about 272.1117890410. Note that the first 3 decimals are identical.

The spelling of 20148470 in words is "twenty million, one hundred forty-eight thousand, four hundred seventy".