70388500 has 216 divisors, whose sum is σ = 205031736. Its totient is φ = 20966400.

The previous prime is 70388473. The next prime is 70388503. The reversal of 70388500 is 588307.

It can be written as a sum of positive squares in 12 ways, for example, as 63011844 + 7376656 = 7938^2 + 2716^2 .

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70388503) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4140492 + ... + 4140508.

It is an arithmetic number, because the mean of its divisors is an integer number (949221).

Almost surely, 2^70388500 is an apocalyptic number.

70388500 is a gapful number since it is divisible by the number (70) 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 70388500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102515868).

70388500 is an abundant number, since it is smaller than the sum of its proper divisors (134643236).

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

70388500 is a wasteful number, since it uses less digits than its factorization.

70388500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 70388500 is about 8389.7854561365. The cubic root of 70388500 is about 412.8895615845.

The spelling of 70388500 in words is "seventy million, three hundred eighty-eight thousand, five hundred".