73215452 has 12 divisors (see below), whose sum is σ = 131590200. Its totient is φ = 35618256.

The previous prime is 73215449. The next prime is 73215469. The reversal of 73215452 is 25451237.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247202 + ... + 247497.

It is an arithmetic number, because the mean of its divisors is an integer number (10965850).

Almost surely, 2^73215452 is an apocalyptic number.

It is an amenable number.

73215452 is a deficient number, since it is larger than the sum of its proper divisors (58374748).

73215452 is a wasteful number, since it uses less digits than its factorization.

73215452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494740 (or 494738 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 73215452 is about 8556.6028305631. The cubic root of 73215452 is about 418.3446788067.

Adding to 73215452 its reverse (25451237), we get a palindrome (98666689).

It can be divided in two parts, 73215 and 452, that multiplied together give a triangular number (33093180 = T₈₁₃₅).

The spelling of 73215452 in words is "seventy-three million, two hundred fifteen thousand, four hundred fifty-two".