70000400 has 60 divisors (see below), whose sum is σ = 169520400. Its totient is φ = 27776640.

The previous prime is 70000379. The next prime is 70000409. The reversal of 70000400 is 400007.

It is not an unprimeable number, because it can be changed into a prime (70000409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54971 + ... + 56229.

It is an arithmetic number, because the mean of its divisors is an integer number (2825340).

Almost surely, 2^70000400 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 70000400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84760200).

70000400 is an abundant number, since it is smaller than the sum of its proper divisors (99520000).

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

70000400 is a wasteful number, since it uses less digits than its factorization.

70000400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 70000400 is about 8366.6241698788. The cubic root of 70000400 is about 412.1293149861.

Adding to 70000400 its reverse (400007), we get a palindrome (70400407).

The spelling of 70000400 in words is "seventy million, four hundred", and thus it is an aban number.