38495440 has 40 divisors (see below), whose sum is σ = 89804520. Its totient is φ = 15346176.

The previous prime is 38495411. The next prime is 38495447. The reversal of 38495440 is 4459483.

It can be written as a sum of positive squares in 4 ways, for example, as 3732624 + 34762816 = 1932^2 + 5896^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 38495440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38495447) 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 7 ways as a sum of consecutive naturals, for example, 30502 + ... + 31738.

It is an arithmetic number, because the mean of its divisors is an integer number (2245113).

Almost surely, 2^38495440 is an apocalyptic number.

It is an amenable number.

38495440 is an abundant number, since it is smaller than the sum of its proper divisors (51309080).

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

38495440 is a wasteful number, since it uses less digits than its factorization.

38495440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 38495440 is about 6204.4693568427. The cubic root of 38495440 is about 337.6523390922.

The spelling of 38495440 in words is "thirty-eight million, four hundred ninety-five thousand, four hundred forty".