149977170 has 112 divisors (see below), whose sum is σ = 462732480. Its totient is φ = 34268832.

The previous prime is 149977159. The next prime is 149977171. The reversal of 149977170 is 71779941.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149977171) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 49561 + ... + 52499.

It is an arithmetic number, because the mean of its divisors is an integer number (4131540).

Almost surely, 2^149977170 is an apocalyptic number.

149977170 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 149977170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231366240).

149977170 is an abundant number, since it is smaller than the sum of its proper divisors (312755310).

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

149977170 is an equidigital number, since it uses as much as digits as its factorization.

149977170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 45.

The square root of 149977170 is about 12246.5166476023. The cubic root of 149977170 is about 531.3023271179.

The spelling of 149977170 in words is "one hundred forty-nine million, nine hundred seventy-seven thousand, one hundred seventy".