20674770 has 32 divisors (see below), whose sum is σ = 50559552. Its totient is φ = 5408832.

The previous prime is 20674763. The next prime is 20674777. The reversal of 20674770 is 7747602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20674763) and next prime (20674777).

It is a super-2 number, since 2×20674770² = 854892229105800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20674777) 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, 4912 + ... + 8091.

It is an arithmetic number, because the mean of its divisors is an integer number (1579986).

Almost surely, 2^20674770 is an apocalyptic number.

20674770 is an abundant number, since it is smaller than the sum of its proper divisors (29884782).

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

20674770 is a wasteful number, since it uses less digits than its factorization.

20674770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13066.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 20674770 is about 4546.9517261568. The cubic root of 20674770 is about 274.4607393726.

The spelling of 20674770 in words is "twenty million, six hundred seventy-four thousand, seven hundred seventy".