700121838 has 64 divisors (see below), whose sum is σ = 1547320320. Its totient is φ = 209858688.

The previous prime is 700121837. The next prime is 700121869. The reversal of 700121838 is 838121007.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700121837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 673323 + ... + 674361.

It is an arithmetic number, because the mean of its divisors is an integer number (24176880).

Almost surely, 2^700121838 is an apocalyptic number.

700121838 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 700121838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773660160).

700121838 is an abundant number, since it is smaller than the sum of its proper divisors (847198482).

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

700121838 is a wasteful number, since it uses less digits than its factorization.

700121838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 700121838 is about 26459.8155322368. The cubic root of 700121838 is about 887.9555132531.

The spelling of 700121838 in words is "seven hundred million, one hundred twenty-one thousand, eight hundred thirty-eight".