155340432 has 60 divisors (see below), whose sum is σ = 468184444. Its totient is φ = 47796480.

The previous prime is 155340391. The next prime is 155340463. The reversal of 155340432 is 234043551.

It can be written as a sum of positive squares in 2 ways, for example, as 35569296 + 119771136 = 5964^2 + 10944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155340396 and 155340405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39619 + ... + 43362.

Almost surely, 2^155340432 is an apocalyptic number.

155340432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155340432 is an abundant number, since it is smaller than the sum of its proper divisors (312844012).

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

155340432 is a wasteful number, since it uses less digits than its factorization.

155340432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83008 (or 82999 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 155340432 is about 12463.5641772328. The cubic root of 155340432 is about 537.5615153680.

Adding to 155340432 its reverse (234043551), we get a palindrome (389383983).

The spelling of 155340432 in words is "one hundred fifty-five million, three hundred forty thousand, four hundred thirty-two".