7285740 has 192 divisors, whose sum is σ = 27095040. Its totient is φ = 1416960.

The previous prime is 7285739. The next prime is 7285753. The reversal of 7285740 is 475827.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87739 + ... + 87821.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

Almost surely, 2^7285740 is an apocalyptic number.

7285740 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 7285740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13547520).

7285740 is an abundant number, since it is smaller than the sum of its proper divisors (19809300).

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

7285740 is a wasteful number, since it uses less digits than its factorization.

7285740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 7285740 is about 2699.2109958282. The cubic root of 7285740 is about 193.8613456416.

7285740 divided by its sum of digits (33) gives a triangular number (220780 = T₆₆₄).

The spelling of 7285740 in words is "seven million, two hundred eighty-five thousand, seven hundred forty".