4631157828 has 240 divisors, whose sum is σ = 13769699328. Its totient is φ = 1344600000.

The previous prime is 4631157803. The next prime is 4631157841. The reversal of 4631157828 is 8287511364.

4631157828 is a `hidden beast` number, since 4 + 63 + 11 + 578 + 2 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 18450703 + ... + 18450953.

Almost surely, 2^4631157828 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 4631157828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6884849664).

4631157828 is an abundant number, since it is smaller than the sum of its proper divisors (9138541500).

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

4631157828 is a wasteful number, since it uses less digits than its factorization.

4631157828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 465 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 4631157828 is about 68052.6107361062. The cubic root of 4631157828 is about 1666.8500302970.

The spelling of 4631157828 in words is "four billion, six hundred thirty-one million, one hundred fifty-seven thousand, eight hundred twenty-eight".