149081856 has 144 divisors (see below), whose sum is σ = 494876928. Its totient is φ = 38707200.

The previous prime is 149081827. The next prime is 149081879. The reversal of 149081856 is 658180941.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57876 + ... + 60396.

Almost surely, 2^149081856 is an apocalyptic number.

149081856 is a gapful number since it is divisible by the number (16) 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 149081856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247438464).

149081856 is an abundant number, since it is smaller than the sum of its proper divisors (345795072).

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

149081856 is a wasteful number, since it uses less digits than its factorization.

149081856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2544 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 149081856 is about 12209.9081077623. The cubic root of 149081856 is about 530.2429833993.

The spelling of 149081856 in words is "one hundred forty-nine million, eighty-one thousand, eight hundred fifty-six".