70522420 has 24 divisors (see below), whose sum is σ = 148932000. Its totient is φ = 28049952.

The previous prime is 70522381. The next prime is 70522421. The reversal of 70522420 is 2422507.

It is a junction number, because it is equal to n+sod(n) for n = 70522391 and 70522400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70522421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6270 + ... + 13429.

It is an arithmetic number, because the mean of its divisors is an integer number (6205500).

Almost surely, 2^70522420 is an apocalyptic number.

It is an amenable number.

70522420 is an abundant number, since it is smaller than the sum of its proper divisors (78409580).

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

70522420 is a wasteful number, since it uses less digits than its factorization.

70522420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19887 (or 19885 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 70522420 is about 8397.7627973169. The cubic root of 70522420 is about 413.1512479861.

Adding to 70522420 its reverse (2422507), we get a palindrome (72944927).

The spelling of 70522420 in words is "seventy million, five hundred twenty-two thousand, four hundred twenty".