20677212 has 18 divisors (see below), whose sum is σ = 52267488. Its totient is φ = 6892392.

The previous prime is 20677201. The next prime is 20677213. The reversal of 20677212 is 21277602.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20677213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287148 + ... + 287219.

Almost surely, 2^20677212 is an apocalyptic number.

It is an amenable number.

20677212 is an abundant number, since it is smaller than the sum of its proper divisors (31590276).

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

20677212 is a wasteful number, since it uses less digits than its factorization.

20677212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574377 (or 574372 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20677212 is about 4547.2202497790. The cubic root of 20677212 is about 274.4715449218.

The spelling of 20677212 in words is "twenty million, six hundred seventy-seven thousand, two hundred twelve".