20357030 has 24 divisors (see below), whose sum is σ = 37685088. Its totient is φ = 7917408.

The previous prime is 20357027. The next prime is 20357081. The reversal of 20357030 is 3075302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20356993 and 20357011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12947 + ... + 14433.

It is an arithmetic number, because the mean of its divisors is an integer number (1570212).

Almost surely, 2^20357030 is an apocalyptic number.

20357030 is a deficient number, since it is larger than the sum of its proper divisors (17328058).

20357030 is a wasteful number, since it uses less digits than its factorization.

20357030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568 (or 1531 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 20357030 is about 4511.8765497296. The cubic root of 20357030 is about 273.0474587308.

The spelling of 20357030 in words is "twenty million, three hundred fifty-seven thousand, thirty".