20295480 has 32 divisors (see below), whose sum is σ = 60886800. Its totient is φ = 5412096.

The previous prime is 20295479. The next prime is 20295481. The reversal of 20295480 is 8459202.

It is an interprime number because it is at equal distance from previous prime (20295479) and next prime (20295481).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20295481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84445 + ... + 84684.

Almost surely, 2^20295480 is an apocalyptic number.

20295480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20295480 is an abundant number, since it is smaller than the sum of its proper divisors (40591320).

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

20295480 is a wasteful number, since it uses less digits than its factorization.

20295480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169143 (or 169139 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20295480 is about 4505.0504991620. The cubic root of 20295480 is about 272.7719922628.

The spelling of 20295480 in words is "twenty million, two hundred ninety-five thousand, four hundred eighty".