172749352 has 8 divisors (see below), whose sum is σ = 323905050. Its totient is φ = 86374672.

The previous prime is 172749293. The next prime is 172749397. The reversal of 172749352 is 253947271.

It can be written as a sum of positive squares in only one way, i.e., 140327716 + 32421636 = 11846^2 + 5694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10796827 + ... + 10796842.

Almost surely, 2^172749352 is an apocalyptic number.

It is an amenable number.

172749352 is a deficient number, since it is larger than the sum of its proper divisors (151155698).

172749352 is a wasteful number, since it uses less digits than its factorization.

172749352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21593675 (or 21593671 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 172749352 is about 13143.4147769900. The cubic root of 172749352 is about 556.9362363847.

The spelling of 172749352 in words is "one hundred seventy-two million, seven hundred forty-nine thousand, three hundred fifty-two".