20361895 has 8 divisors (see below), whose sum is σ = 24459120. Its totient is φ = 16272960.

The previous prime is 20361889. The next prime is 20361917. The reversal of 20361895 is 59816302.

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

It is not a de Polignac number, because 20361895 - 2¹¹ = 20359847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20361895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6780 + ... + 9310.

It is an arithmetic number, because the mean of its divisors is an integer number (3057390).

Almost surely, 2^20361895 is an apocalyptic number.

20361895 is a deficient number, since it is larger than the sum of its proper divisors (4097225).

20361895 is a wasteful number, since it uses less digits than its factorization.

20361895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 20361895 is about 4512.4156501812. The cubic root of 20361895 is about 273.0692083029.

The spelling of 20361895 in words is "twenty million, three hundred sixty-one thousand, eight hundred ninety-five".