20854370 has 16 divisors (see below), whose sum is σ = 38337408. Its totient is φ = 8164080.

The previous prime is 20854369. The next prime is 20854397. The reversal of 20854370 is 7345802.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21716 + ... + 22655.

It is an arithmetic number, because the mean of its divisors is an integer number (2396088).

Almost surely, 2^20854370 is an apocalyptic number.

20854370 is a deficient number, since it is larger than the sum of its proper divisors (17483038).

20854370 is a wasteful number, since it uses less digits than its factorization.

20854370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44425.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20854370 is about 4566.6585158078. The cubic root of 20854370 is about 275.2531883094.

The spelling of 20854370 in words is "twenty million, eight hundred fifty-four thousand, three hundred seventy".