3500778 has 16 divisors (see below), whose sum is σ = 7030656. Its totient is φ = 1162080.

The previous prime is 3500773. The next prime is 3500779. The reversal of 3500778 is 8770053.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3500771) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 550 + ... + 2702.

It is an arithmetic number, because the mean of its divisors is an integer number (439416).

Almost surely, 2^3500778 is an apocalyptic number.

3500778 is an abundant number, since it is smaller than the sum of its proper divisors (3529878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3500778 is a wasteful number, since it uses less digits than its factorization.

3500778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 3500778 is about 1871.0366110795. The cubic root of 3500778 is about 151.8406975995.

It can be divided in two parts, 3500 and 778, that added together give a triangular number (4278 = T₉₂).

The spelling of 3500778 in words is "three million, five hundred thousand, seven hundred seventy-eight".