20660134 has 32 divisors (see below), whose sum is σ = 36788256. Its totient is φ = 8593920.

The previous prime is 20660099. The next prime is 20660137. The reversal of 20660134 is 43106602.

It is a super-2 number, since 2×20660134² = 853682273795912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13092 + ... + 14584.

It is an arithmetic number, because the mean of its divisors is an integer number (1149633).

Almost surely, 2^20660134 is an apocalyptic number.

20660134 is a deficient number, since it is larger than the sum of its proper divisors (16128122).

20660134 is a wasteful number, since it uses less digits than its factorization.

20660134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20660134 is about 4545.3420113342. The cubic root of 20660134 is about 274.3959590363.

Adding to 20660134 its reverse (43106602), we get a palindrome (63766736).

The spelling of 20660134 in words is "twenty million, six hundred sixty thousand, one hundred thirty-four".