117785970 has 48 divisors (see below), whose sum is σ = 307875672. Its totient is φ = 31242240.

The previous prime is 117785951. The next prime is 117785977. The reversal of 117785970 is 79587711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76685049 + 41100921 = 8757^2 + 6411^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (117785977) 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, 13980 + ... + 20760.

Almost surely, 2^117785970 is an apocalyptic number.

117785970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117785970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153937836).

117785970 is an abundant number, since it is smaller than the sum of its proper divisors (190089702).

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

117785970 is a wasteful number, since it uses less digits than its factorization.

117785970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6987 (or 6984 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 45.

The square root of 117785970 is about 10852.9244906615. The cubic root of 117785970 is about 490.1900831316.

The spelling of 117785970 in words is "one hundred seventeen million, seven hundred eighty-five thousand, nine hundred seventy".