700009128 has 224 divisors, whose sum is σ = 2423836800. Its totient is φ = 184477824.

The previous prime is 700009073. The next prime is 700009129. The reversal of 700009128 is 821900007.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (700009129) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 530053 + ... + 531371.

It is an arithmetic number, because the mean of its divisors is an integer number (10820700).

Almost surely, 2^700009128 is an apocalyptic number.

700009128 is a gapful number since it is divisible by the number (78) 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 700009128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211918400).

700009128 is an abundant number, since it is smaller than the sum of its proper divisors (1723827672).

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

700009128 is a wasteful number, since it uses less digits than its factorization.

700009128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 700009128 is about 26457.6856130690. The cubic root of 700009128 is about 887.9078611486.

The spelling of 700009128 in words is "seven hundred million, nine thousand, one hundred twenty-eight".