149091228 has 72 divisors (see below), whose sum is σ = 442771056. Its totient is φ = 41702400.

The previous prime is 149091193. The next prime is 149091247. The reversal of 149091228 is 822190941.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 149091192 and 149091201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9333 + ... + 19628.

It is an arithmetic number, because the mean of its divisors is an integer number (6149598).

Almost surely, 2^149091228 is an apocalyptic number.

149091228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

149091228 is an abundant number, since it is smaller than the sum of its proper divisors (293679828).

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

149091228 is a wasteful number, since it uses less digits than its factorization.

149091228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28995 (or 28990 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 149091228 is about 12210.2918884030. The cubic root of 149091228 is about 530.2540943716.

The spelling of 149091228 in words is "one hundred forty-nine million, ninety-one thousand, two hundred twenty-eight".