70523400 has 48 divisors (see below), whose sum is σ = 218624400. Its totient is φ = 18806080.

The previous prime is 70523303. The next prime is 70523407. The reversal of 70523400 is 432507.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70523407) 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, 58170 + ... + 59369.

It is an arithmetic number, because the mean of its divisors is an integer number (4554675).

Almost surely, 2^70523400 is an apocalyptic number.

It is an amenable number.

70523400 is an abundant number, since it is smaller than the sum of its proper divisors (148101000).

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

70523400 is a wasteful number, since it uses less digits than its factorization.

70523400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117558 (or 117549 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 70523400 is about 8397.8211459878. The cubic root of 70523400 is about 413.1531617338.

Adding to 70523400 its reverse (432507), we get a palindrome (70955907).

The spelling of 70523400 in words is "seventy million, five hundred twenty-three thousand, four hundred".