20361634 has 8 divisors (see below), whose sum is σ = 30730320. Its totient is φ = 10118196.

The previous prime is 20361629. The next prime is 20361641. The reversal of 20361634 is 43616302.

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

It is a super-2 number, since 2×20361634² = 829192278299912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20361599 and 20361608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30904 + ... + 31555.

It is an arithmetic number, because the mean of its divisors is an integer number (3841290).

Almost surely, 2^20361634 is an apocalyptic number.

20361634 is a deficient number, since it is larger than the sum of its proper divisors (10368686).

20361634 is a wasteful number, since it uses less digits than its factorization.

20361634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62624.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20361634 is about 4512.3867298803. The cubic root of 20361634 is about 273.0680415588.

Adding to 20361634 its reverse (43616302), we get a palindrome (63977936).

The spelling of 20361634 in words is "twenty million, three hundred sixty-one thousand, six hundred thirty-four".