70216040 has 16 divisors (see below), whose sum is σ = 157986180. Its totient is φ = 28086400.

The previous prime is 70216037. The next prime is 70216061. The reversal of 70216040 is 4061207.

It can be written as a sum of positive squares in 2 ways, for example, as 65189476 + 5026564 = 8074^2 + 2242^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877661 + ... + 877740.

Almost surely, 2^70216040 is an apocalyptic number.

It is an amenable number.

70216040 is an abundant number, since it is smaller than the sum of its proper divisors (87770140).

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

70216040 is a wasteful number, since it uses less digits than its factorization.

70216040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755412 (or 1755408 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 70216040 is about 8379.5011784712. The cubic root of 70216040 is about 412.5520766820.

Adding to 70216040 its reverse (4061207), we get a palindrome (74277247).

The spelling of 70216040 in words is "seventy million, two hundred sixteen thousand, forty".