3997628026 has 16 divisors (see below), whose sum is σ = 6860114496. Its totient is φ = 1711509696.

The previous prime is 3997628021. The next prime is 3997628027. The reversal of 3997628026 is 6208267993.

It is not an unprimeable number, because it can be changed into a prime (3997628021) 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, 132456 + ... + 159811.

It is an arithmetic number, because the mean of its divisors is an integer number (428757156).

Almost surely, 2^3997628026 is an apocalyptic number.

3997628026 is a deficient number, since it is larger than the sum of its proper divisors (2862486470).

3997628026 is a wasteful number, since it uses less digits than its factorization.

3997628026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293253.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 3997628026 is about 63226.7983215978. The cubic root of 3997628026 is about 1587.0872170908.

The spelling of 3997628026 in words is "three billion, nine hundred ninety-seven million, six hundred twenty-eight thousand, twenty-six".