390043026 has 40 divisors (see below), whose sum is σ = 879406704. Its totient is φ = 129207960.

The previous prime is 390043021. The next prime is 390043057. The reversal of 390043026 is 620340093.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (390043021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19021 + ... + 33791.

Almost surely, 2^390043026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390043026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439703352).

390043026 is an abundant number, since it is smaller than the sum of its proper divisors (489363678).

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

390043026 is a wasteful number, since it uses less digits than its factorization.

390043026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14948 (or 14939 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 390043026 is about 19749.5069811882. The cubic root of 390043026 is about 730.6412242929.

The spelling of 390043026 in words is "three hundred ninety million, forty-three thousand, twenty-six".