20942270 has 8 divisors (see below), whose sum is σ = 37696104. Its totient is φ = 8376904.

The previous prime is 20942239. The next prime is 20942287. The reversal of 20942270 is 7224902.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047104 + ... + 1047123.

It is an arithmetic number, because the mean of its divisors is an integer number (4712013).

Almost surely, 2^20942270 is an apocalyptic number.

20942270 is a deficient number, since it is larger than the sum of its proper divisors (16753834).

20942270 is a wasteful number, since it uses less digits than its factorization.

20942270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094234.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20942270 is about 4576.2725006276. The cubic root of 20942270 is about 275.6393718200.

It can be divided in two parts, 20942 and 270, that added together give a palindrome (21212).

The spelling of 20942270 in words is "twenty million, nine hundred forty-two thousand, two hundred seventy".