7450640 has 20 divisors (see below), whose sum is σ = 17322924. Its totient is φ = 2980224.

The previous prime is 7450637. The next prime is 7450673. The reversal of 7450640 is 460547.

It can be written as a sum of positive squares in 2 ways, for example, as 1993744 + 5456896 = 1412^2 + 2336^2 .

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

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 46487 + ... + 46646.

Almost surely, 2^7450640 is an apocalyptic number.

It is an amenable number.

7450640 is an abundant number, since it is smaller than the sum of its proper divisors (9872284).

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

7450640 is a wasteful number, since it uses less digits than its factorization.

7450640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93146 (or 93140 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 7450640 is about 2729.5860492023. The cubic root of 7450640 is about 195.3130190706.

The spelling of 7450640 in words is "seven million, four hundred fifty thousand, six hundred forty".