7294640 has 20 divisors (see below), whose sum is σ = 16960224. Its totient is φ = 2917824.

The previous prime is 7294633. The next prime is 7294643. The reversal of 7294640 is 464927.

It is a tau number, because it is divible by the number of its divisors (20).

It is a d-powerful number, because it can be written as 7⁷ + 2¹³ + 9⁷ + 4³ + 6⁸ + 4⁴ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 7294597 and 7294606.

It is not an unprimeable number, because it can be changed into a prime (7294643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45512 + ... + 45671.

Almost surely, 2^7294640 is an apocalyptic number.

It is an amenable number.

7294640 is an abundant number, since it is smaller than the sum of its proper divisors (9665584).

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

7294640 is a wasteful number, since it uses less digits than its factorization.

7294640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91196 (or 91190 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 7294640 is about 2700.8591225756. The cubic root of 7294640 is about 193.9402515548.

The spelling of 7294640 in words is "seven million, two hundred ninety-four thousand, six hundred forty".