7802023402 has 4 divisors (see below), whose sum is σ = 11703035106. Its totient is φ = 3901011700.

The previous prime is 7802023387. The next prime is 7802023421. The reversal of 7802023402 is 2043202087.

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., 7172565481 + 629457921 = 84691^2 + 25089^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1950505849 + ... + 1950505852.

Almost surely, 2^7802023402 is an apocalyptic number.

7802023402 is a deficient number, since it is larger than the sum of its proper divisors (3901011704).

7802023402 is a wasteful number, since it uses less digits than its factorization.

7802023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901011703.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 7802023402 is about 88329.0631785484. The cubic root of 7802023402 is about 1983.3639548474.

Adding to 7802023402 its reverse (2043202087), we get a palindrome (9845225489).

The spelling of 7802023402 in words is "seven billion, eight hundred two million, twenty-three thousand, four hundred two".