387026930 has 16 divisors (see below), whose sum is σ = 737628120. Its totient is φ = 145704192.

The previous prime is 387026891. The next prime is 387026933. The reversal of 387026930 is 39620783.

It is a Cunningham number, because it is equal to 19673²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 301334881 + 85692049 = 17359^2 + 9257^2 .

It is not an unprimeable number, because it can be changed into a prime (387026933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138145 + ... + 1138484.

Almost surely, 2^387026930 is an apocalyptic number.

387026930 is a deficient number, since it is larger than the sum of its proper divisors (350601190).

387026930 is a wasteful number, since it uses less digits than its factorization.

387026930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276653.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 387026930 is about 19673.0000254155. Note that the first 4 decimals coincide. The cubic root of 387026930 is about 728.7530661352.

The spelling of 387026930 in words is "three hundred eighty-seven million, twenty-six thousand, nine hundred thirty".