981286004 has 6 divisors (see below), whose sum is σ = 1717250514. Its totient is φ = 490643000.

The previous prime is 981285973. The next prime is 981286037. The reversal of 981286004 is 400682189.

It can be written as a sum of positive squares in only one way, i.e., 624000400 + 357285604 = 24980^2 + 18902^2 .

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, 122660747 + ... + 122660754.

It is an arithmetic number, because the mean of its divisors is an integer number (286208419).

Almost surely, 2^981286004 is an apocalyptic number.

It is an amenable number.

981286004 is a deficient number, since it is larger than the sum of its proper divisors (735964510).

981286004 is a wasteful number, since it uses less digits than its factorization.

981286004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245321505 (or 245321503 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 981286004 is about 31325.4848964864. The cubic root of 981286004 is about 993.7226790268.

The spelling of 981286004 in words is "nine hundred eighty-one million, two hundred eighty-six thousand, four".