20703030 has 32 divisors (see below), whose sum is σ = 50747904. Its totient is φ = 5402976.

The previous prime is 20702993. The next prime is 20703031. The reversal of 20703030 is 3030702.

It is a Harshad number since it is a multiple of its sum of digits (15).

20703030 is a modest number, since divided by 3030 gives 2070 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703031) 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, 5932 + ... + 8751.

It is an arithmetic number, because the mean of its divisors is an integer number (1585872).

Almost surely, 2^20703030 is an apocalyptic number.

20703030 is an abundant number, since it is smaller than the sum of its proper divisors (30044874).

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

20703030 is a wasteful number, since it uses less digits than its factorization.

20703030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14740.

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 20703030 is about 4550.0582413855. The cubic root of 20703030 is about 274.5857343819.

Adding to 20703030 its reverse (3030702), we get a palindrome (23733732).

The spelling of 20703030 in words is "twenty million, seven hundred three thousand, thirty".