70213040 has 40 divisors (see below), whose sum is σ = 164849568. Its totient is φ = 27809280.

The previous prime is 70213019. The next prime is 70213061. The reversal of 70213040 is 4031207.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70213019) and next prime (70213061).

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

It is a super-3 number, since 3×70213040³ (a number of 25 digits) contains 333 as substring.

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, 3980 + ... + 12500.

Almost surely, 2^70213040 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 70213040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82424784).

70213040 is an abundant number, since it is smaller than the sum of its proper divisors (94636528).

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

70213040 is a wasteful number, since it uses less digits than its factorization.

70213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8637 (or 8631 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 70213040 is about 8379.3221682902. The cubic root of 70213040 is about 412.5462011306.

Adding to 70213040 its reverse (4031207), we get a palindrome (74244247).

The spelling of 70213040 in words is "seventy million, two hundred thirteen thousand, forty".