628499424 has 96 divisors (see below), whose sum is σ = 1890604800. Its totient is φ = 179085312.

The previous prime is 628499407. The next prime is 628499429. The reversal of 628499424 is 424994826.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×628499424³ (a number of 27 digits) contains 333 as substring.

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 (628499429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300687 + ... + 302769.

It is an arithmetic number, because the mean of its divisors is an integer number (19693800).

Almost surely, 2^628499424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628499424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945302400).

628499424 is an abundant number, since it is smaller than the sum of its proper divisors (1262105376).

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

628499424 is a wasteful number, since it uses less digits than its factorization.

628499424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2544 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 628499424 is about 25069.8907855619. The cubic root of 628499424 is about 856.5807192881.

The spelling of 628499424 in words is "six hundred twenty-eight million, four hundred ninety-nine thousand, four hundred twenty-four".