70157940 has 96 divisors (see below), whose sum is σ = 204374016. Its totient is φ = 17969280.

The previous prime is 70157917. The next prime is 70157947. The reversal of 70157940 is 4975107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70157947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182989 + ... + 183371.

It is an arithmetic number, because the mean of its divisors is an integer number (2128896).

Almost surely, 2^70157940 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 70157940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102187008).

70157940 is an abundant number, since it is smaller than the sum of its proper divisors (134216076).

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

70157940 is a wasteful number, since it uses less digits than its factorization.

70157940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 70157940 is about 8376.0336675541. The cubic root of 70157940 is about 412.4382570581.

The spelling of 70157940 in words is "seventy million, one hundred fifty-seven thousand, nine hundred forty".