727955473428 has 36 divisors (see below), whose sum is σ = 1840152574260. Its totient is φ = 242646166656.

The previous prime is 727955473409. The next prime is 727955473429. The reversal of 727955473428 is 824374559727.

It is a happy number.

727955473428 is a `hidden beast` number, since 7 + 2 + 7 + 9 + 554 + 73 + 4 + 2 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 466764972804 + 261190500624 = 683202^2 + 511068^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×727955473428² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727955473429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1505928 + ... + 1929696.

It is an arithmetic number, because the mean of its divisors is an integer number (51115349285).

Almost surely, 2^727955473428 is an apocalyptic number.

It is an amenable number.

727955473428 is an abundant number, since it is smaller than the sum of its proper divisors (1112197100832).

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

727955473428 is a wasteful number, since it uses less digits than its factorization.

727955473428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471496 (or 471491 counting only the distinct ones).

The product of its digits is 118540800, while the sum is 63.

The spelling of 727955473428 in words is "seven hundred twenty-seven billion, nine hundred fifty-five million, four hundred seventy-three thousand, four hundred twenty-eight".