38751490 has 16 divisors (see below), whose sum is σ = 70538040. Its totient is φ = 15326080.

The previous prime is 38751467. The next prime is 38751491. The reversal of 38751490 is 9415783.

It can be written as a sum of positive squares in 4 ways, for example, as 16670889 + 22080601 = 4083^2 + 4699^2 .

It is not an unprimeable number, because it can be changed into a prime (38751491) 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, 20881 + ... + 22660.

Almost surely, 2^38751490 is an apocalyptic number.

38751490 is a deficient number, since it is larger than the sum of its proper divisors (31786550).

38751490 is a wasteful number, since it uses less digits than its factorization.

38751490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43637.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 38751490 is about 6225.0694775239. The cubic root of 38751490 is about 338.3993098273.

The spelling of 38751490 in words is "thirty-eight million, seven hundred fifty-one thousand, four hundred ninety".