70440 has 32 divisors (see below), whose sum is σ = 211680. Its totient is φ = 18752.

The previous prime is 70439. The next prime is 70451. The reversal of 70440 is 4407.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 174 + ... + 413.

It is an arithmetic number, because the mean of its divisors is an integer number (6615).

2⁷⁰⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

70440 is an abundant number, since it is smaller than the sum of its proper divisors (141240).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105840).

70440 is a wasteful number, since it uses less digits than its factorization.

70440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 70440 is about 265.4053503605. The cubic root of 70440 is about 41.2990234415.

Adding to 70440 its reverse (4407), we get a palindrome (74847).

The spelling of 70440 in words is "seventy thousand, four hundred forty", and thus it is an iban number.