70823900 has 144 divisors (see below), whose sum is σ = 188987904. Its totient is φ = 22513920.

The previous prime is 70823899. The next prime is 70823903. The reversal of 70823900 is 932807.

It is a super-2 number, since 2×70823900² = 10032049622420000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70823903) 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, 853259 + ... + 853341.

It is an arithmetic number, because the mean of its divisors is an integer number (1312416).

Almost surely, 2^70823900 is an apocalyptic number.

70823900 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 70823900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94493952).

70823900 is an abundant number, since it is smaller than the sum of its proper divisors (118164004).

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

70823900 is a wasteful number, since it uses less digits than its factorization.

70823900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 70823900 is about 8415.6936731324. The cubic root of 70823900 is about 413.7391450315.

The spelling of 70823900 in words is "seventy million, eight hundred twenty-three thousand, nine hundred".