7828738 has 8 divisors (see below), whose sum is σ = 12433932. Its totient is φ = 3684096.

The previous prime is 7828729. The next prime is 7828747. The reversal of 7828738 is 8378287.

It is an interprime number because it is at equal distance from previous prime (7828729) and next prime (7828747).

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 27889 = 2793^2 + 167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7828738² = 122578277345288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7828694 and 7828703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115095 + ... + 115162.

Almost surely, 2^7828738 is an apocalyptic number.

7828738 is a deficient number, since it is larger than the sum of its proper divisors (4605194).

7828738 is a wasteful number, since it uses less digits than its factorization.

7828738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230276.

The product of its digits is 150528, while the sum is 43.

The square root of 7828738 is about 2797.9882058365. The cubic root of 7828738 is about 198.5625095257.

The spelling of 7828738 in words is "seven million, eight hundred twenty-eight thousand, seven hundred thirty-eight".