153502420 has 12 divisors (see below), whose sum is σ = 322355124. Its totient is φ = 61400960.

The previous prime is 153502417. The next prime is 153502439. The reversal of 153502420 is 24205351.

It can be written as a sum of positive squares in 2 ways, for example, as 30603024 + 122899396 = 5532^2 + 11086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 153502391 and 153502400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3837541 + ... + 3837580.

It is an arithmetic number, because the mean of its divisors is an integer number (26862927).

Almost surely, 2^153502420 is an apocalyptic number.

153502420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153502420 is an abundant number, since it is smaller than the sum of its proper divisors (168852704).

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

153502420 is a wasteful number, since it uses less digits than its factorization.

153502420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7675130 (or 7675128 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 153502420 is about 12389.6093562307. The cubic root of 153502420 is about 535.4329275915.

Adding to 153502420 its reverse (24205351), we get a palindrome (177707771).

The spelling of 153502420 in words is "one hundred fifty-three million, five hundred two thousand, four hundred twenty".