7408820 has 12 divisors (see below), whose sum is σ = 15558564. Its totient is φ = 2963520.

The previous prime is 7408813. The next prime is 7408853. The reversal of 7408820 is 288047.

It can be written as a sum of positive squares in 2 ways, for example, as 5134756 + 2274064 = 2266^2 + 1508^2 .

It is a super-2 number, since 2×7408820² = 109781227584800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185201 + ... + 185240.

It is an arithmetic number, because the mean of its divisors is an integer number (1296547).

Almost surely, 2^7408820 is an apocalyptic number.

It is an amenable number.

7408820 is an abundant number, since it is smaller than the sum of its proper divisors (8149744).

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

7408820 is a wasteful number, since it uses less digits than its factorization.

7408820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370450 (or 370448 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 7408820 is about 2721.9147672181. The cubic root of 7408820 is about 194.9469064307.

It can be divided in two parts, 7408 and 820, that added together give a palindrome (8228).

The spelling of 7408820 in words is "seven million, four hundred eight thousand, eight hundred twenty".