20480310 has 32 divisors (see below), whose sum is σ = 54614880. Its totient is φ = 5461344.

The previous prime is 20480269. The next prime is 20480321. The reversal of 20480310 is 1308402.

It is a happy number.

It is a super-2 number, since 2×20480310² = 838886195392200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37657 + ... + 38196.

It is an arithmetic number, because the mean of its divisors is an integer number (1706715).

Almost surely, 2^20480310 is an apocalyptic number.

20480310 is an abundant number, since it is smaller than the sum of its proper divisors (34134570).

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

20480310 is a wasteful number, since it uses less digits than its factorization.

20480310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75869 (or 75863 counting only the distinct ones).

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

The square root of 20480310 is about 4525.5176499490. The cubic root of 20480310 is about 273.5975319106.

Adding to 20480310 its reverse (1308402), we get a palindrome (21788712).

The spelling of 20480310 in words is "twenty million, four hundred eighty thousand, three hundred ten".