70353840 has 80 divisors (see below), whose sum is σ = 218923488. Its totient is φ = 18690048.

The previous prime is 70353839. The next prime is 70353847. The reversal of 70353840 is 4835307.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70353798 and 70353807.

It is not an unprimeable number, because it can be changed into a prime (70353847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103582 + ... + 104258.

Almost surely, 2^70353840 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 70353840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109461744).

70353840 is an abundant number, since it is smaller than the sum of its proper divisors (148569648).

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

70353840 is a wasteful number, since it uses less digits than its factorization.

70353840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 70353840 is about 8387.7195947409. The cubic root of 70353840 is about 412.8217801440.

The spelling of 70353840 in words is "seventy million, three hundred fifty-three thousand, eight hundred forty".