7072730 has 48 divisors (see below), whose sum is σ = 15289344. Its totient is φ = 2307360.

The previous prime is 7072699. The next prime is 7072771. The reversal of 7072730 is 372707.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7072730.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36935 + ... + 37125.

It is an arithmetic number, because the mean of its divisors is an integer number (318528).

Almost surely, 2^7072730 is an apocalyptic number.

7072730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7072730 is an abundant number, since it is smaller than the sum of its proper divisors (8216614).

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

7072730 is a wasteful number, since it uses less digits than its factorization.

7072730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 26.

The square root of 7072730 is about 2659.4604715995. The cubic root of 7072730 is about 191.9533487642.

The spelling of 7072730 in words is "seven million, seventy-two thousand, seven hundred thirty".