7820354 has 4 divisors (see below), whose sum is σ = 11730534. Its totient is φ = 3910176.

The previous prime is 7820347. The next prime is 7820359. The reversal of 7820354 is 4530287.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5784025 + 2036329 = 2405^2 + 1427^2 .

It is a super-2 number, since 2×7820354² = 122315873370632, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (7820359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1955087 + ... + 1955090.

Almost surely, 2^7820354 is an apocalyptic number.

7820354 is a deficient number, since it is larger than the sum of its proper divisors (3910180).

7820354 is a wasteful number, since it uses less digits than its factorization.

7820354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910179.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 7820354 is about 2796.4895851764. The cubic root of 7820354 is about 198.4916022816.

The spelling of 7820354 in words is "seven million, eight hundred twenty thousand, three hundred fifty-four".