20478348 has 36 divisors (see below), whose sum is σ = 56471688. Its totient is φ = 6205440.

The previous prime is 20478329. The next prime is 20478373. The reversal of 20478348 is 84387402.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25461 + ... + 26252.

It is an arithmetic number, because the mean of its divisors is an integer number (1568658).

Almost surely, 2^20478348 is an apocalyptic number.

It is an amenable number.

20478348 is an abundant number, since it is smaller than the sum of its proper divisors (35993340).

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

20478348 is a wasteful number, since it uses less digits than its factorization.

20478348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51734 (or 51729 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 20478348 is about 4525.3008739751. The cubic root of 20478348 is about 273.5887948114.

The spelling of 20478348 in words is "twenty million, four hundred seventy-eight thousand, three hundred forty-eight".