20740354 has 4 divisors (see below), whose sum is σ = 31110534. Its totient is φ = 10370176.

The previous prime is 20740351. The next prime is 20740361. The reversal of 20740354 is 45304702.

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., 16443025 + 4297329 = 4055^2 + 2073^2 .

It is not an unprimeable number, because it can be changed into a prime (20740351) by changing a digit.

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, 5185087 + ... + 5185090.

Almost surely, 2^20740354 is an apocalyptic number.

20740354 is a deficient number, since it is larger than the sum of its proper divisors (10370180).

20740354 is a wasteful number, since it uses less digits than its factorization.

20740354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10370179.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20740354 is about 4554.1578804429. The cubic root of 20740354 is about 274.7506455932.

The spelling of 20740354 in words is "twenty million, seven hundred forty thousand, three hundred fifty-four".