20354634 has 12 divisors (see below), whose sum is σ = 44101746. Its totient is φ = 6784872.

The previous prime is 20354629. The next prime is 20354641. The reversal of 20354634 is 43645302.

20354634 is a `hidden beast` number, since 20 + 3 + 5 + 4 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12215025 + 8139609 = 3495^2 + 2853^2 .

It is a super-2 number, since 2×20354634² = 828622250547912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20354598 and 20354607.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565389 + ... + 565424.

Almost surely, 2^20354634 is an apocalyptic number.

20354634 is an abundant number, since it is smaller than the sum of its proper divisors (23747112).

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

20354634 is a wasteful number, since it uses less digits than its factorization.

20354634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130821 (or 1130818 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 20354634 is about 4511.6110204671. The cubic root of 20354634 is about 273.0367458488.

Adding to 20354634 its reverse (43645302), we get a palindrome (63999936).

The spelling of 20354634 in words is "twenty million, three hundred fifty-four thousand, six hundred thirty-four".