743428155 has 32 divisors (see below), whose sum is σ = 1203093504. Its totient is φ = 391982976.

The previous prime is 743428151. The next prime is 743428183. The reversal of 743428155 is 551824347.

It is not a de Polignac number, because 743428155 - 2² = 743428151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (743428151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 755794 + ... + 756776.

It is an arithmetic number, because the mean of its divisors is an integer number (37596672).

Almost surely, 2^743428155 is an apocalyptic number.

743428155 is a deficient number, since it is larger than the sum of its proper divisors (459665349).

743428155 is a wasteful number, since it uses less digits than its factorization.

743428155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515.

The product of its digits is 134400, while the sum is 39.

The square root of 743428155 is about 27265.8789515394. The cubic root of 743428155 is about 905.8987662766.

The spelling of 743428155 in words is "seven hundred forty-three million, four hundred twenty-eight thousand, one hundred fifty-five".