7374640 has 80 divisors (see below), whose sum is σ = 21123648. Its totient is φ = 2331648.

The previous prime is 7374611. The next prime is 7374643. The reversal of 7374640 is 464737.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (7374643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6774 + ... + 7786.

Almost surely, 2^7374640 is an apocalyptic number.

7374640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7374640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10561824).

7374640 is an abundant number, since it is smaller than the sum of its proper divisors (13749008).

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

7374640 is a wasteful number, since it uses less digits than its factorization.

7374640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 7374640 is about 2715.6288406187. The cubic root of 7374640 is about 194.6466535586.

Subtracting from 7374640 its reverse (464737), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 7374640 in words is "seven million, three hundred seventy-four thousand, six hundred forty".