70401040 has 40 divisors (see below), whose sum is σ = 165322008. Its totient is φ = 27878400.

The previous prime is 70401017. The next prime is 70401043. The reversal of 70401040 is 4010407.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44675856 + 25725184 = 6684^2 + 5072^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (70401043) 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, 3724 + ... + 12436.

Almost surely, 2^70401040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70401040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82661004).

70401040 is an abundant number, since it is smaller than the sum of its proper divisors (94920968).

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

70401040 is a wasteful number, since it uses less digits than its factorization.

70401040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8827 (or 8821 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 70401040 is about 8390.5327602006. The cubic root of 70401040 is about 412.9140794515.

Adding to 70401040 its reverse (4010407), we get a palindrome (74411447).

The spelling of 70401040 in words is "seventy million, four hundred one thousand, forty".