20702354 has 4 divisors (see below), whose sum is σ = 31053534. Its totient is φ = 10351176.

The previous prime is 20702347. The next prime is 20702399. The reversal of 20702354 is 45320702.

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., 13801225 + 6901129 = 3715^2 + 2627^2 .

It is a super-2 number, since 2×20702354² = 857174922282632, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 5175587 + ... + 5175590.

Almost surely, 2^20702354 is an apocalyptic number.

20702354 is a deficient number, since it is larger than the sum of its proper divisors (10351180).

20702354 is a wasteful number, since it uses less digits than its factorization.

20702354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351179.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20702354 is about 4549.9839560157. The cubic root of 20702354 is about 274.5827457376.

The spelling of 20702354 in words is "twenty million, seven hundred two thousand, three hundred fifty-four".