151235820 has 72 divisors (see below), whose sum is σ = 482904240. Its totient is φ = 38206080.

The previous prime is 151235803. The next prime is 151235837. The reversal of 151235820 is 28532151.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (151235803) and next prime (151235837).

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 23 ways as a sum of consecutive naturals, for example, 18691 + ... + 25530.

Almost surely, 2^151235820 is an apocalyptic number.

151235820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151235820 is an abundant number, since it is smaller than the sum of its proper divisors (331668420).

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

151235820 is a wasteful number, since it uses less digits than its factorization.

151235820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44255 (or 44250 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 151235820 is about 12297.7973637558. The cubic root of 151235820 is about 532.7844674610.

Adding to 151235820 its reverse (28532151), we get a palindrome (179767971).

The spelling of 151235820 in words is "one hundred fifty-one million, two hundred thirty-five thousand, eight hundred twenty".