7139730 has 32 divisors (see below), whose sum is σ = 18454464. Its totient is φ = 1757376.

The previous prime is 7139701. The next prime is 7139731. The reversal of 7139730 is 379317.

7139730 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (7139731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8764 + ... + 9543.

It is an arithmetic number, because the mean of its divisors is an integer number (576702).

Almost surely, 2^7139730 is an apocalyptic number.

7139730 is an abundant number, since it is smaller than the sum of its proper divisors (11314734).

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

7139730 is a wasteful number, since it uses less digits than its factorization.

7139730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18330.

The product of its (nonzero) digits is 3969, while the sum is 30.

The square root of 7139730 is about 2672.0273202196. The cubic root of 7139730 is about 192.5575697830.

The spelling of 7139730 in words is "seven million, one hundred thirty-nine thousand, seven hundred thirty".