7281930 has 16 divisors (see below), whose sum is σ = 17476704. Its totient is φ = 1941840.

The previous prime is 7281919. The next prime is 7281941. The reversal of 7281930 is 391827.

It is a happy number.

7281930 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7281919) and next prime (7281941).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 242731 = 7281930 / (7 + 2 + 8 + 1 + 9 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121336 + ... + 121395.

It is an arithmetic number, because the mean of its divisors is an integer number (1092294).

Almost surely, 2^7281930 is an apocalyptic number.

7281930 is an abundant number, since it is smaller than the sum of its proper divisors (10194774).

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

7281930 is a wasteful number, since it uses less digits than its factorization.

7281930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242741.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 7281930 is about 2698.5051417405. The cubic root of 7281930 is about 193.8275471752.

The spelling of 7281930 in words is "seven million, two hundred eighty-one thousand, nine hundred thirty".