3500978 has 24 divisors (see below), whose sum is σ = 5984748. Its totient is φ = 1526688.

The previous prime is 3500969. The next prime is 3500999. The reversal of 3500978 is 8790053.

It can be written as a sum of positive squares in 2 ways, for example, as 3396649 + 104329 = 1843^2 + 323^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9200 + ... + 9572.

Almost surely, 2^3500978 is an apocalyptic number.

3500978 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3500978 is a deficient number, since it is larger than the sum of its proper divisors (2483770).

3500978 is a wasteful number, since it uses less digits than its factorization.

3500978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 3500978 is about 1871.0900566247. The cubic root of 3500978 is about 151.8435891054.

The spelling of 3500978 in words is "three million, five hundred thousand, nine hundred seventy-eight".