7489820 has 24 divisors (see below), whose sum is σ = 16939104. Its totient is φ = 2765376.

The previous prime is 7489787. The next prime is 7489829. The reversal of 7489820 is 289847.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7489829) 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, 14144 + ... + 14663.

It is an arithmetic number, because the mean of its divisors is an integer number (705796).

Almost surely, 2^7489820 is an apocalyptic number.

It is an amenable number.

7489820 is an abundant number, since it is smaller than the sum of its proper divisors (9449284).

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

7489820 is a wasteful number, since it uses less digits than its factorization.

7489820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28829 (or 28827 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 7489820 is about 2736.7535511989. The cubic root of 7489820 is about 195.6547789526.

The spelling of 7489820 in words is "seven million, four hundred eighty-nine thousand, eight hundred twenty".