20950346 has 4 divisors (see below), whose sum is σ = 31425522. Its totient is φ = 10475172.

The previous prime is 20950337. The next prime is 20950357. The reversal of 20950346 is 64305902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64305902 = 2 ⋅32152951.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 474721 = 4525^2 + 689^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5237585 + ... + 5237588.

Almost surely, 2^20950346 is an apocalyptic number.

20950346 is a deficient number, since it is larger than the sum of its proper divisors (10475176).

20950346 is a wasteful number, since it uses less digits than its factorization.

20950346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10475175.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 20950346 is about 4577.1547931002. The cubic root of 20950346 is about 275.6747990123.

The spelling of 20950346 in words is "twenty million, nine hundred fifty thousand, three hundred forty-six".