20545546 has 8 divisors (see below), whose sum is σ = 35220960. Its totient is φ = 8805228.

The previous prime is 20545531. The next prime is 20545573. The reversal of 20545546 is 64554502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733756 + ... + 733783.

It is an arithmetic number, because the mean of its divisors is an integer number (4402620).

Almost surely, 2^20545546 is an apocalyptic number.

20545546 is a deficient number, since it is larger than the sum of its proper divisors (14675414).

20545546 is a wasteful number, since it uses less digits than its factorization.

20545546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467548.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 20545546 is about 4532.7194927549. The cubic root of 20545546 is about 273.8877210596.

The spelling of 20545546 in words is "twenty million, five hundred forty-five thousand, five hundred forty-six".