398236652 has 18 divisors (see below), whose sum is σ = 766030524. Its totient is φ = 181016440.

The previous prime is 398236591. The next prime is 398236667. The reversal of 398236652 is 256632893.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 410918 + ... + 411885.

Almost surely, 2^398236652 is an apocalyptic number.

It is an amenable number.

398236652 is a deficient number, since it is larger than the sum of its proper divisors (367793872).

398236652 is a wasteful number, since it uses less digits than its factorization.

398236652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822829 (or 822816 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 398236652 is about 19955.8676083001. The cubic root of 398236652 is about 735.7219999030.

The spelling of 398236652 in words is "three hundred ninety-eight million, two hundred thirty-six thousand, six hundred fifty-two".