70923030 has 96 divisors (see below), whose sum is σ = 183949920. Its totient is φ = 17487360.

The previous prime is 70922987. The next prime is 70923037. The reversal of 70923030 is 3032907.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70923037) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 650616 + ... + 650724.

It is an arithmetic number, because the mean of its divisors is an integer number (1916145).

Almost surely, 2^70923030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70923030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91974960).

70923030 is an abundant number, since it is smaller than the sum of its proper divisors (113026890).

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

70923030 is a wasteful number, since it uses less digits than its factorization.

70923030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 70923030 is about 8421.5812054507. The cubic root of 70923030 is about 413.9320876257.

Adding to 70923030 its reverse (3032907), we get a palindrome (73955937).

The spelling of 70923030 in words is "seventy million, nine hundred twenty-three thousand, thirty".