70285920 has 96 divisors (see below), whose sum is σ = 222899040. Its totient is φ = 18616320.

The previous prime is 70285889. The next prime is 70285927. The reversal of 70285920 is 2958207.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×70285920² = 9880221100492800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70285927) 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, 86476 + ... + 87284.

It is an arithmetic number, because the mean of its divisors is an integer number (2321865).

Almost surely, 2^70285920 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 70285920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111449520).

70285920 is an abundant number, since it is smaller than the sum of its proper divisors (152613120).

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

70285920 is a wasteful number, since it uses less digits than its factorization.

70285920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 70285920 is about 8383.6698408275. The cubic root of 70285920 is about 412.6888905339.

The spelling of 70285920 in words is "seventy million, two hundred eighty-five thousand, nine hundred twenty".