155471428 has 24 divisors (see below), whose sum is σ = 313854912. Its totient is φ = 66006624.

The previous prime is 155471413. The next prime is 155471453. The reversal of 155471428 is 824174551.

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, 22951 + ... + 28942.

It is an arithmetic number, because the mean of its divisors is an integer number (13077288).

Almost surely, 2^155471428 is an apocalyptic number.

It is an amenable number.

155471428 is an abundant number, since it is smaller than the sum of its proper divisors (158383484).

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

155471428 is a wasteful number, since it uses less digits than its factorization.

155471428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52011 (or 52009 counting only the distinct ones).

The product of its digits is 44800, while the sum is 37.

The square root of 155471428 is about 12468.8182278835. The cubic root of 155471428 is about 537.7125784716.

It can be divided in two parts, 15547 and 1428, that multiplied together give a triangular number (22201116 = T₆₆₆₃).

The spelling of 155471428 in words is "one hundred fifty-five million, four hundred seventy-one thousand, four hundred twenty-eight".