150621620 has 24 divisors (see below), whose sum is σ = 317442888. Its totient is φ = 60032000.

The previous prime is 150621613. The next prime is 150621643. The reversal of 150621620 is 26126051.

It can be written as a sum of positive squares in 4 ways, for example, as 15038884 + 135582736 = 3878^2 + 11644^2 .

It is a super-2 number, since 2×150621620² = 45373744822848800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7781 + ... + 19020.

It is an arithmetic number, because the mean of its divisors is an integer number (13226787).

Almost surely, 2^150621620 is an apocalyptic number.

150621620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

150621620 is an abundant number, since it is smaller than the sum of its proper divisors (166821268).

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

150621620 is a wasteful number, since it uses less digits than its factorization.

150621620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27091 (or 27089 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 150621620 is about 12272.8000065185. The cubic root of 150621620 is about 532.0622395006.

Adding to 150621620 its reverse (26126051), we get a palindrome (176747671).

The spelling of 150621620 in words is "one hundred fifty million, six hundred twenty-one thousand, six hundred twenty".