70290880 has 112 divisors (see below), whose sum is σ = 192389760. Its totient is φ = 24192000.

The previous prime is 70290877. The next prime is 70290887. The reversal of 70290880 is 8809207.

It is a happy number.

It is a super-2 number, since 2×70290880² = 9881615622348800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70290887) 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, 66355 + ... + 67405.

Almost surely, 2^70290880 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 70290880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96194880).

70290880 is an abundant number, since it is smaller than the sum of its proper divisors (122098880).

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

70290880 is a wasteful number, since it uses less digits than its factorization.

70290880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 70290880 is about 8383.9656487846. The cubic root of 70290880 is about 412.6985979724.

The spelling of 70290880 in words is "seventy million, two hundred ninety thousand, eight hundred eighty".