151229820 has 48 divisors (see below), whose sum is σ = 483936768. Its totient is φ = 34566720.

The previous prime is 151229791. The next prime is 151229831. The reversal of 151229820 is 28922151.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179616 + ... + 180455.

It is an arithmetic number, because the mean of its divisors is an integer number (10082016).

Almost surely, 2^151229820 is an apocalyptic number.

151229820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151229820 is an abundant number, since it is smaller than the sum of its proper divisors (332706948).

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

151229820 is a wasteful number, since it uses less digits than its factorization.

151229820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360090 (or 360088 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 151229820 is about 12297.5534152123. The cubic root of 151229820 is about 532.7774216235. Note that the first 3 decimals are identical.

It can be divided in two parts, 15122 and 9820, that added together give a palindrome (24942).

The spelling of 151229820 in words is "one hundred fifty-one million, two hundred twenty-nine thousand, eight hundred twenty".