7250040 has 192 divisors, whose sum is σ = 28317600. Its totient is φ = 1645056.

The previous prime is 7250027. The next prime is 7250051. The reversal of 7250040 is 400527.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 7249995 and 7250022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52852 + ... + 52988.

Almost surely, 2^7250040 is an apocalyptic number.

7250040 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 7250040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14158800).

7250040 is an abundant number, since it is smaller than the sum of its proper divisors (21067560).

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

7250040 is a wasteful number, since it uses less digits than its factorization.

7250040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 7250040 is about 2692.5898313705. The cubic root of 7250040 is about 193.5441879734.

Adding to 7250040 its reverse (400527), we get a palindrome (7650567).

It can be divided in two parts, 7 and 250040, that added together give a cube (250047 = 63³).

The spelling of 7250040 in words is "seven million, two hundred fifty thousand, forty".