78112300 has 72 divisors (see below), whose sum is σ = 195265280. Its totient is φ = 26568000.

The previous prime is 78112271. The next prime is 78112303. The reversal of 78112300 is 321187.

It is a super-2 number, since 2×78112300² = 12203062822580000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78112303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105331 + ... + 106069.

Almost surely, 2^78112300 is an apocalyptic number.

78112300 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 78112300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97632640).

78112300 is an abundant number, since it is smaller than the sum of its proper divisors (117152980).

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

78112300 is a wasteful number, since it uses less digits than its factorization.

78112300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 78112300 is about 8838.1163151432. The cubic root of 78112300 is about 427.4708209397.

Adding to 78112300 its reverse (321187), we get a palindrome (78433487).

The spelling of 78112300 in words is "seventy-eight million, one hundred twelve thousand, three hundred".