20473356 has 12 divisors (see below), whose sum is σ = 47771192. Its totient is φ = 6824448.

The previous prime is 20473351. The next prime is 20473367. The reversal of 20473356 is 65337402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20473351) 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, 853045 + ... + 853068.

Almost surely, 2^20473356 is an apocalyptic number.

It is an amenable number.

20473356 is an abundant number, since it is smaller than the sum of its proper divisors (27297836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20473356 is a wasteful number, since it uses less digits than its factorization.

20473356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706120 (or 1706118 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 20473356 is about 4524.7492748218. The cubic root of 20473356 is about 273.5665621220.

The spelling of 20473356 in words is "twenty million, four hundred seventy-three thousand, three hundred fifty-six".