70909240 has 32 divisors (see below), whose sum is σ = 160483680. Its totient is φ = 28196992.

The previous prime is 70909199. The next prime is 70909243. The reversal of 70909240 is 4290907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70909243) 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, 1797 + ... + 12043.

It is an arithmetic number, because the mean of its divisors is an integer number (5015115).

Almost surely, 2^70909240 is an apocalyptic number.

It is an amenable number.

70909240 is an abundant number, since it is smaller than the sum of its proper divisors (89574440).

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

70909240 is a wasteful number, since it uses less digits than its factorization.

70909240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431 (or 10427 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 70909240 is about 8420.7624357893. The cubic root of 70909240 is about 413.9052581014.

The spelling of 70909240 in words is "seventy million, nine hundred nine thousand, two hundred forty".