20227478 has 8 divisors (see below), whose sum is σ = 30838800. Its totient is φ = 9947880.

The previous prime is 20227477. The next prime is 20227481. The reversal of 20227478 is 87472202.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20227477) 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, 82778 + ... + 83021.

It is an arithmetic number, because the mean of its divisors is an integer number (3854850).

Almost surely, 2^20227478 is an apocalyptic number.

20227478 is a deficient number, since it is larger than the sum of its proper divisors (10611322).

20227478 is a wasteful number, since it uses less digits than its factorization.

20227478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165862.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 20227478 is about 4497.4968593652. The cubic root of 20227478 is about 272.4670015874.

The spelling of 20227478 in words is "twenty million, two hundred twenty-seven thousand, four hundred seventy-eight".