20478094 has 32 divisors (see below), whose sum is σ = 38840256. Its totient is φ = 7879680.

The previous prime is 20478091. The next prime is 20478097. The reversal of 20478094 is 49087402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20478091) and next prime (20478097).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20478091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5214 + ... + 8254.

It is an arithmetic number, because the mean of its divisors is an integer number (1213758).

Almost surely, 2^20478094 is an apocalyptic number.

20478094 is a deficient number, since it is larger than the sum of its proper divisors (18362162).

20478094 is a wasteful number, since it uses less digits than its factorization.

20478094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20478094 is about 4525.2728094558. The cubic root of 20478094 is about 273.5876636681.

The spelling of 20478094 in words is "twenty million, four hundred seventy-eight thousand, ninety-four".