70002240 has 224 divisors, whose sum is σ = 277392384. Its totient is φ = 14530560.

The previous prime is 70002239. The next prime is 70002263. The reversal of 70002240 is 4220007.

70002240 = T₅₆ + T₅₇ + ... + T₇₄₈.

It is a tau number, because it is divible by the number of its divisors (224).

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 31 ways as a sum of consecutive naturals, for example, 73447 + ... + 74393.

Almost surely, 2^70002240 is an apocalyptic number.

70002240 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 70002240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138696192).

70002240 is an abundant number, since it is smaller than the sum of its proper divisors (207390144).

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

70002240 is a wasteful number, since it uses less digits than its factorization.

70002240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 975 counting only the distinct ones).

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

The square root of 70002240 is about 8366.7341298741. The cubic root of 70002240 is about 412.1329259716.

Adding to 70002240 its reverse (4220007), we get a palindrome (74222247).

The spelling of 70002240 in words is "seventy million, two thousand, two hundred forty".