802621420 has 12 divisors (see below), whose sum is σ = 1685505024. Its totient is φ = 321048560.

The previous prime is 802621399. The next prime is 802621439. The reversal of 802621420 is 24126208.

It is a happy number.

It is a super-2 number, since 2×802621420² = 1288402287685632800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20065516 + ... + 20065555.

It is an arithmetic number, because the mean of its divisors is an integer number (140458752).

Almost surely, 2^802621420 is an apocalyptic number.

It is an amenable number.

802621420 is an abundant number, since it is smaller than the sum of its proper divisors (882883604).

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

802621420 is a wasteful number, since it uses less digits than its factorization.

802621420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40131080 (or 40131078 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 802621420 is about 28330.5739440626. The cubic root of 802621420 is about 929.3306240417.

Adding to 802621420 its reverse (24126208), we get a palindrome (826747628).

The spelling of 802621420 in words is "eight hundred two million, six hundred twenty-one thousand, four hundred twenty".