20481030 has 24 divisors (see below), whose sum is σ = 53250912. Its totient is φ = 5461584.

The previous prime is 20481023. The next prime is 20481037. The reversal of 20481030 is 3018402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20481023) and next prime (20481037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20480994 and 20481012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20481037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113694 + ... + 113873.

It is an arithmetic number, because the mean of its divisors is an integer number (2218788).

Almost surely, 2^20481030 is an apocalyptic number.

20481030 is an abundant number, since it is smaller than the sum of its proper divisors (32769882).

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

20481030 is a wasteful number, since it uses less digits than its factorization.

20481030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227580 (or 227577 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20481030 is about 4525.5971981607. The cubic root of 20481030 is about 273.6007380456.

Adding to 20481030 its reverse (3018402), we get a palindrome (23499432).

The spelling of 20481030 in words is "twenty million, four hundred eighty-one thousand, thirty".