20467406 has 4 divisors (see below), whose sum is σ = 30701112. Its totient is φ = 10233702.

The previous prime is 20467387. The next prime is 20467429. The reversal of 20467406 is 60476402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5116850 + ... + 5116853.

It is an arithmetic number, because the mean of its divisors is an integer number (7675278).

Almost surely, 2^20467406 is an apocalyptic number.

20467406 is a deficient number, since it is larger than the sum of its proper divisors (10233706).

20467406 is a wasteful number, since it uses less digits than its factorization.

20467406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233705.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 20467406 is about 4524.0917320496. The cubic root of 20467406 is about 273.5400581013.

The spelling of 20467406 in words is "twenty million, four hundred sixty-seven thousand, four hundred six".