428233149 has 20 divisors (see below), whose sum is σ = 643262620. Its totient is φ = 283901760.

The previous prime is 428233147. The next prime is 428233187. The reversal of 428233149 is 941332824.

428233149 is a `hidden beast` number, since 4 + 282 + 331 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65901924 + 362331225 = 8118^2 + 19035^2 .

It is not a de Polignac number, because 428233149 - 2¹ = 428233147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428233147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57 + ... + 29265.

It is an arithmetic number, because the mean of its divisors is an integer number (32163131).

Almost surely, 2^428233149 is an apocalyptic number.

It is an amenable number.

428233149 is a deficient number, since it is larger than the sum of its proper divisors (215029471).

428233149 is a wasteful number, since it uses less digits than its factorization.

428233149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29402 (or 29393 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 428233149 is about 20693.7949395465. The cubic root of 428233149 is about 753.7490205675.

The spelling of 428233149 in words is "four hundred twenty-eight million, two hundred thirty-three thousand, one hundred forty-nine".