70520040 has 192 divisors, whose sum is σ = 242611200. Its totient is φ = 17740800.

The previous prime is 70520033. The next prime is 70520059. The reversal of 70520040 is 4002507.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 70519995 and 70520022.

It is a congruent number.

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, 792316 + ... + 792404.

It is an arithmetic number, because the mean of its divisors is an integer number (1263600).

Almost surely, 2^70520040 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 70520040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121305600).

70520040 is an abundant number, since it is smaller than the sum of its proper divisors (172091160).

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

70520040 is a wasteful number, since it uses less digits than its factorization.

70520040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 70520040 is about 8397.6210917140. The cubic root of 70520040 is about 413.1466002394.

Adding to 70520040 its reverse (4002507), we get a palindrome (74522547).

The spelling of 70520040 in words is "seventy million, five hundred twenty thousand, forty".