70990032 has 80 divisors (see below), whose sum is σ = 188599040. Its totient is φ = 23003136.

The previous prime is 70990021. The next prime is 70990037. The reversal of 70990032 is 23009907.

It is a super-2 number, since 2×70990032² = 10079169286722048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70990037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367728 + ... + 367920.

It is an arithmetic number, because the mean of its divisors is an integer number (2357488).

Almost surely, 2^70990032 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 70990032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94299520).

70990032 is an abundant number, since it is smaller than the sum of its proper divisors (117609008).

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

70990032 is a wasteful number, since it uses less digits than its factorization.

70990032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 70990032 is about 8425.5582604359. The cubic root of 70990032 is about 414.0623957859.

Adding to 70990032 its reverse (23009907), we get a palindrome (93999939).

The spelling of 70990032 in words is "seventy million, nine hundred ninety thousand, thirty-two".