70445340 has 180 divisors, whose sum is σ = 250812744. Its totient is φ = 16003008.

The previous prime is 70445329. The next prime is 70445371. The reversal of 70445340 is 4354407.

It is a tau number, because it is divible by the number of its divisors (180).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 432099 + ... + 432261.

Almost surely, 2^70445340 is an apocalyptic number.

70445340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70445340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125406372).

70445340 is an abundant number, since it is smaller than the sum of its proper divisors (180367404).

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

70445340 is a wasteful number, since it uses less digits than its factorization.

70445340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 70445340 is about 8393.1722250887. The cubic root of 70445340 is about 413.0006703044. Note that the first 3 decimals are identical.

Adding to 70445340 its reverse (4354407), we get a palindrome (74799747).

The spelling of 70445340 in words is "seventy million, four hundred forty-five thousand, three hundred forty".