7400000 has 84 divisors (see below), whose sum is σ = 18850356. Its totient is φ = 2880000.

The previous prime is 7399993. The next prime is 7400011. The reversal of 7400000 is 47.

It can be written as a sum of positive squares in 6 ways, for example, as 4631104 + 2768896 = 2152^2 + 1664^2 .

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199982 + ... + 200018.

It is an arithmetic number, because the mean of its divisors is an integer number (224409).

Almost surely, 2^7400000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9425178).

7400000 is an abundant number, since it is smaller than the sum of its proper divisors (11450356).

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

7400000 is an frugal number, since it uses more digits than its factorization.

7400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 7400000 is about 2720.2941017471. The cubic root of 7400000 is about 194.8695160375.

Adding to 7400000 its reverse (47), we get a palindrome (7400047).

The spelling of 7400000 in words is "seven million, four hundred thousand".