20195402 has 8 divisors (see below), whose sum is σ = 30676800. Its totient is φ = 9969804.

The previous prime is 20195401. The next prime is 20195429. The reversal of 20195402 is 20459102.

20195402 is nontrivially palindromic in base 5.

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

It is not an unprimeable number, because it can be changed into a prime (20195401) 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, 63752 + ... + 64067.

It is an arithmetic number, because the mean of its divisors is an integer number (3834600).

Almost surely, 2^20195402 is an apocalyptic number.

20195402 is a deficient number, since it is larger than the sum of its proper divisors (10481398).

20195402 is a wasteful number, since it uses less digits than its factorization.

20195402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127900.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20195402 is about 4493.9294609506. The cubic root of 20195402 is about 272.3229026329.

The spelling of 20195402 in words is "twenty million, one hundred ninety-five thousand, four hundred two".