20370946 has 4 divisors (see below), whose sum is σ = 30556422. Its totient is φ = 10185472.

The previous prime is 20370929. The next prime is 20370967. The reversal of 20370946 is 64907302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 790321 = 4425^2 + 889^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5092735 + ... + 5092738.

Almost surely, 2^20370946 is an apocalyptic number.

20370946 is a deficient number, since it is larger than the sum of its proper divisors (10185476).

20370946 is a wasteful number, since it uses less digits than its factorization.

20370946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185475.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20370946 is about 4513.4184383901. The cubic root of 20370946 is about 273.1096626793.

It can be divided in two parts, 20370 and 946, that added together give a square (21316 = 146²).

The spelling of 20370946 in words is "twenty million, three hundred seventy thousand, nine hundred forty-six".