20354072 has 16 divisors (see below), whose sum is σ = 38253600. Its totient is φ = 10153120.

The previous prime is 20354071. The next prime is 20354099. The reversal of 20354072 is 27045302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (2390850).

Almost surely, 2^20354072 is an apocalyptic number.

It is an amenable number.

20354072 is a deficient number, since it is larger than the sum of its proper divisors (17899528).

20354072 is a wasteful number, since it uses less digits than its factorization.

20354072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986 (or 5982 counting only the distinct ones).

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

The square root of 20354072 is about 4511.5487362989. The cubic root of 20354072 is about 273.0342329392.

Adding to 20354072 its reverse (27045302), we get a palindrome (47399374).

The spelling of 20354072 in words is "twenty million, three hundred fifty-four thousand, seventy-two".