70420272 has 60 divisors (see below), whose sum is σ = 197011944. Its totient is φ = 21665280.

The previous prime is 70420267. The next prime is 70420277. The reversal of 70420272 is 27202407.

It is an interprime number because it is at equal distance from previous prime (70420267) and next prime (70420277).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (70420277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3772 + ... + 12452.

Almost surely, 2^70420272 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 70420272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98505972).

70420272 is an abundant number, since it is smaller than the sum of its proper divisors (126591672).

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

70420272 is a wasteful number, since it uses less digits than its factorization.

70420272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8718 (or 8699 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 70420272 is about 8391.6787355094. The cubic root of 70420272 is about 412.9516756791.

Adding to 70420272 its reverse (27202407), we get a palindrome (97622679).

The spelling of 70420272 in words is "seventy million, four hundred twenty thousand, two hundred seventy-two".