70157220 has 120 divisors (see below), whose sum is σ = 229637184. Its totient is φ = 16003008.

The previous prime is 70157203. The next prime is 70157221. The reversal of 70157220 is 2275107.

It is not an unprimeable number, because it can be changed into a prime (70157221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 143817 + ... + 144303.

Almost surely, 2^70157220 is an apocalyptic number.

70157220 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 70157220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114818592).

70157220 is an abundant number, since it is smaller than the sum of its proper divisors (159479964).

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

70157220 is a wasteful number, since it uses less digits than its factorization.

70157220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 70157220 is about 8375.9906876739. The cubic root of 70157220 is about 412.4368461627.

The spelling of 70157220 in words is "seventy million, one hundred fifty-seven thousand, two hundred twenty".