802978004 has 6 divisors (see below), whose sum is σ = 1405211514. Its totient is φ = 401489000.

The previous prime is 802977997. The next prime is 802978031. The reversal of 802978004 is 400879208.

It can be written as a sum of positive squares in only one way, i.e., 479697604 + 323280400 = 21902^2 + 17980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100372247 + ... + 100372254.

It is an arithmetic number, because the mean of its divisors is an integer number (234201919).

Almost surely, 2^802978004 is an apocalyptic number.

It is an amenable number.

802978004 is a deficient number, since it is larger than the sum of its proper divisors (602233510).

802978004 is a wasteful number, since it uses less digits than its factorization.

802978004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200744505 (or 200744503 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 802978004 is about 28336.8665169598. The cubic root of 802978004 is about 929.4682295428.

The spelling of 802978004 in words is "eight hundred two million, nine hundred seventy-eight thousand, four".