381502250 has 64 divisors (see below), whose sum is σ = 747545760. Its totient is φ = 145600000.

The previous prime is 381502223. The next prime is 381502259. The reversal of 381502250 is 52205183.

It can be written as a sum of positive squares in 16 ways, for example, as 120409 + 381381841 = 347^2 + 19529^2 .

It is not an unprimeable number, because it can be changed into a prime (381502259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 731990 + ... + 732510.

Almost surely, 2^381502250 is an apocalyptic number.

381502250 is a deficient number, since it is larger than the sum of its proper divisors (366043510).

381502250 is a wasteful number, since it uses less digits than its factorization.

381502250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 381502250 is about 19532.0825822543. The cubic root of 381502250 is about 725.2688657962.

The spelling of 381502250 in words is "three hundred eighty-one million, five hundred two thousand, two hundred fifty".