70521282 has 48 divisors (see below), whose sum is σ = 166578048. Its totient is φ = 21431520.

The previous prime is 70521263. The next prime is 70521313. The reversal of 70521282 is 28212507.

It is a super-3 number, since 3×70521282³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17607 + ... + 21237.

It is an arithmetic number, because the mean of its divisors is an integer number (3470376).

Almost surely, 2^70521282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70521282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83289024).

70521282 is an abundant number, since it is smaller than the sum of its proper divisors (96056766).

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

70521282 is a wasteful number, since it uses less digits than its factorization.

70521282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 70521282 is about 8397.6950409026. The cubic root of 70521282 is about 413.1490256732.

Adding to 70521282 its reverse (28212507), we get a palindrome (98733789).

The spelling of 70521282 in words is "seventy million, five hundred twenty-one thousand, two hundred eighty-two".