70253040 has 320 divisors, whose sum is σ = 269982720. Its totient is φ = 14868480.

The previous prime is 70253039. The next prime is 70253077. The reversal of 70253040 is 4035207.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70252998 and 70253016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 789316 + ... + 789404.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^70253040 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 70253040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134991360).

70253040 is an abundant number, since it is smaller than the sum of its proper divisors (199729680).

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

70253040 is a wasteful number, since it uses less digits than its factorization.

70253040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 70253040 is about 8381.7086563540. The cubic root of 70253040 is about 412.6245280595.

Adding to 70253040 its reverse (4035207), we get a palindrome (74288247).

The spelling of 70253040 in words is "seventy million, two hundred fifty-three thousand, forty".