20953354 has 4 divisors (see below), whose sum is σ = 31430034. Its totient is φ = 10476676.

The previous prime is 20953351. The next prime is 20953363. The reversal of 20953354 is 45335902.

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., 18688329 + 2265025 = 4323^2 + 1505^2 .

It is not an unprimeable number, because it can be changed into a prime (20953351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5238337 + ... + 5238340.

Almost surely, 2^20953354 is an apocalyptic number.

20953354 is a deficient number, since it is larger than the sum of its proper divisors (10476680).

20953354 is a wasteful number, since it uses less digits than its factorization.

20953354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10476679.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 20953354 is about 4577.4833697131. The cubic root of 20953354 is about 275.6879919545.

The spelling of 20953354 in words is "twenty million, nine hundred fifty-three thousand, three hundred fifty-four".