70023900 has 72 divisors (see below), whose sum is σ = 207580464. Its totient is φ = 18214400.

The previous prime is 70023887. The next prime is 70023907. The reversal of 70023900 is 932007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70023907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9454 + ... + 15146.

It is an arithmetic number, because the mean of its divisors is an integer number (2883062).

Almost surely, 2^70023900 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 70023900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103790232).

70023900 is an abundant number, since it is smaller than the sum of its proper divisors (137556564).

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

70023900 is a wasteful number, since it uses less digits than its factorization.

70023900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751 (or 5744 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 70023900 is about 8368.0284416343. The cubic root of 70023900 is about 412.1754287955.

Adding to 70023900 its reverse (932007), we get a palindrome (70955907).

The spelling of 70023900 in words is "seventy million, twenty-three thousand, nine hundred".