70440072 has 32 divisors (see below), whose sum is σ = 182174400. Its totient is φ = 22670144.

The previous prime is 70440067. The next prime is 70440089. The reversal of 70440072 is 27004407.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49908 + ... + 51299.

It is an arithmetic number, because the mean of its divisors is an integer number (5692950).

Almost surely, 2^70440072 is an apocalyptic number.

It is an amenable number.

70440072 is an abundant number, since it is smaller than the sum of its proper divisors (111734328).

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

70440072 is a wasteful number, since it uses less digits than its factorization.

70440072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101245 (or 101241 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 70440072 is about 8392.8583927051. The cubic root of 70440072 is about 412.9903751272.

Adding to 70440072 its reverse (27004407), we get a palindrome (97444479).

The spelling of 70440072 in words is "seventy million, four hundred forty thousand, seventy-two".