20966435 has 16 divisors (see below), whose sum is σ = 28852416. Its totient is φ = 14327808.

The previous prime is 20966431. The next prime is 20966459. The reversal of 20966435 is 53466902.

It is a cyclic number.

It is not a de Polignac number, because 20966435 - 2² = 20966431 is a prime.

It is a super-3 number, since 3×20966435³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20966395 and 20966404.

It is not an unprimeable number, because it can be changed into a prime (20966431) 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, 11507 + ... + 13203.

It is an arithmetic number, because the mean of its divisors is an integer number (1803276).

Almost surely, 2^20966435 is an apocalyptic number.

20966435 is a deficient number, since it is larger than the sum of its proper divisors (7885981).

20966435 is a wasteful number, since it uses less digits than its factorization.

20966435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 20966435 is about 4578.9119886715. The cubic root of 20966435 is about 275.7453499067.

The spelling of 20966435 in words is "twenty million, nine hundred sixty-six thousand, four hundred thirty-five".