20475234 has 32 divisors (see below), whose sum is σ = 49002240. Its totient is φ = 6299856.

The previous prime is 20475197. The next prime is 20475253. The reversal of 20475234 is 43257402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20475198 and 20475207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13882 + ... + 15285.

It is an arithmetic number, because the mean of its divisors is an integer number (1531320).

Almost surely, 2^20475234 is an apocalyptic number.

20475234 is an abundant number, since it is smaller than the sum of its proper divisors (28527006).

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

20475234 is a wasteful number, since it uses less digits than its factorization.

20475234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29191 (or 29185 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 20475234 is about 4524.9567953739. The cubic root of 20475234 is about 273.5749265265.

The spelling of 20475234 in words is "twenty million, four hundred seventy-five thousand, two hundred thirty-four".