3652978 has 32 divisors (see below), whose sum is σ = 6819840. Its totient is φ = 1432080.

The previous prime is 3652969. The next prime is 3652991. The reversal of 3652978 is 8792563.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁷ + 6⁸ + 5⁹ + 2 + 9³ + 7⁵ + 8³ .

It is a self number, because there is not a number n which added to its sum of digits gives 3652978.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8025 + ... + 8467.

It is an arithmetic number, because the mean of its divisors is an integer number (213120).

Almost surely, 2^3652978 is an apocalyptic number.

3652978 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3652978 is a deficient number, since it is larger than the sum of its proper divisors (3166862).

3652978 is a wasteful number, since it uses less digits than its factorization.

3652978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its digits is 90720, while the sum is 40.

The square root of 3652978 is about 1911.2765367680. The cubic root of 3652978 is about 154.0100347652.

The spelling of 3652978 in words is "three million, six hundred fifty-two thousand, nine hundred seventy-eight".