20270470 has 32 divisors (see below), whose sum is σ = 40144896. Its totient is φ = 7308000.

The previous prime is 20270431. The next prime is 20270479. The reversal of 20270470 is 7407202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13245 + ... + 14695.

It is an arithmetic number, because the mean of its divisors is an integer number (1254528).

Almost surely, 2^20270470 is an apocalyptic number.

20270470 is a deficient number, since it is larger than the sum of its proper divisors (19874426).

20270470 is a wasteful number, since it uses less digits than its factorization.

20270470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20270470 is about 4502.2738699462. The cubic root of 20270470 is about 272.6599011027.

Adding to 20270470 its reverse (7407202), we get a palindrome (27677672).

The spelling of 20270470 in words is "twenty million, two hundred seventy thousand, four hundred seventy".