398428752 has 40 divisors (see below), whose sum is σ = 1030621536. Its totient is φ = 132635776.

The previous prime is 398428721. The next prime is 398428753. The reversal of 398428752 is 257824893.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398428753) 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, 34678 + ... + 44714.

Almost surely, 2^398428752 is an apocalyptic number.

It is an amenable number.

398428752 is an abundant number, since it is smaller than the sum of its proper divisors (632192784).

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

398428752 is a wasteful number, since it uses less digits than its factorization.

398428752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875 (or 10869 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 398428752 is about 19960.6801487324. The cubic root of 398428752 is about 735.8402792196.

The spelling of 398428752 in words is "three hundred ninety-eight million, four hundred twenty-eight thousand, seven hundred fifty-two".