7253540 has 48 divisors (see below), whose sum is σ = 17563392. Its totient is φ = 2464896.

The previous prime is 7253539. The next prime is 7253581. The reversal of 7253540 is 453527.

It is a super-2 number, since 2×7253540² = 105227685063200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27449 + ... + 27711.

It is an arithmetic number, because the mean of its divisors is an integer number (365904).

Almost surely, 2^7253540 is an apocalyptic number.

7253540 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 7253540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8781696).

7253540 is an abundant number, since it is smaller than the sum of its proper divisors (10309852).

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

7253540 is a wasteful number, since it uses less digits than its factorization.

7253540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 7253540 is about 2693.2396848405. The cubic root of 7253540 is about 193.5753278329.

The spelling of 7253540 in words is "seven million, two hundred fifty-three thousand, five hundred forty".