70073520 has 240 divisors, whose sum is σ = 253317120. Its totient is φ = 15966720.

The previous prime is 70073519. The next prime is 70073543. The reversal of 70073520 is 2537007.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 551697 + ... + 551823.

It is an arithmetic number, because the mean of its divisors is an integer number (1055488).

Almost surely, 2^70073520 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 70073520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126658560).

70073520 is an abundant number, since it is smaller than the sum of its proper divisors (183243600).

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

70073520 is a wasteful number, since it uses less digits than its factorization.

70073520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 70073520 is about 8370.9927726644. The cubic root of 70073520 is about 412.2727637329.

The spelling of 70073520 in words is "seventy million, seventy-three thousand, five hundred twenty".