302812020 has 384 divisors, whose sum is σ = 1163796480. Its totient is φ = 64665216.

The previous prime is 302812001. The next prime is 302812021. The reversal of 302812020 is 20218203.

It is a happy number.

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 = 302811984 and 302812002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302812021) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7042119 + ... + 7042161.

It is an arithmetic number, because the mean of its divisors is an integer number (3030720).

Almost surely, 2^302812020 is an apocalyptic number.

302812020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 302812020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581898240).

302812020 is an abundant number, since it is smaller than the sum of its proper divisors (860984460).

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

302812020 is a wasteful number, since it uses less digits than its factorization.

302812020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 83 counting only the distinct ones).

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

The square root of 302812020 is about 17401.4947633817. The cubic root of 302812020 is about 671.5180696408.

The spelling of 302812020 in words is "three hundred two million, eight hundred twelve thousand, twenty".