39428650 has 24 divisors (see below), whose sum is σ = 73509804. Its totient is φ = 15734400.

The previous prime is 39428639. The next prime is 39428659. The reversal of 39428650 is 5682493.

It can be written as a sum of positive squares in 6 ways, for example, as 20584369 + 18844281 = 4537^2 + 4341^2 .

It is not an unprimeable number, because it can be changed into a prime (39428659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32454 + ... + 33646.

Almost surely, 2^39428650 is an apocalyptic number.

39428650 is a deficient number, since it is larger than the sum of its proper divisors (34081154).

39428650 is a wasteful number, since it uses less digits than its factorization.

39428650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866 (or 1861 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 39428650 is about 6279.2236781309. The cubic root of 39428650 is about 340.3590497654.

It can be divided in two parts, 3 and 9428650, that added together give a triangular number (9428653 = T₄₃₄₂).

The spelling of 39428650 in words is "thirty-nine million, four hundred twenty-eight thousand, six hundred fifty".