428373400 has 96 divisors (see below), whose sum is σ = 1225859040. Its totient is φ = 135567360.

The previous prime is 428373349. The next prime is 428373409. The reversal of 428373400 is 4373824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428373409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6432 + ... + 29968.

It is an arithmetic number, because the mean of its divisors is an integer number (12769365).

Almost surely, 2^428373400 is an apocalyptic number.

428373400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428373400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612929520).

428373400 is an abundant number, since it is smaller than the sum of its proper divisors (797485640).

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

428373400 is a wasteful number, since it uses less digits than its factorization.

428373400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23573 (or 23564 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 428373400 is about 20697.1833832529. The cubic root of 428373400 is about 753.8312985785.

The spelling of 428373400 in words is "four hundred twenty-eight million, three hundred seventy-three thousand, four hundred".