72543098 has 4 divisors (see below), whose sum is σ = 108814650. Its totient is φ = 36271548.

The previous prime is 72543077. The next prime is 72543101. The reversal of 72543098 is 89034527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39100009 + 33443089 = 6253^2 + 5783^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18135773 + ... + 18135776.

Almost surely, 2^72543098 is an apocalyptic number.

72543098 is a deficient number, since it is larger than the sum of its proper divisors (36271552).

72543098 is a wasteful number, since it uses less digits than its factorization.

72543098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36271551.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 72543098 is about 8517.2236086650. The cubic root of 72543098 is about 417.0601542229.

The spelling of 72543098 in words is "seventy-two million, five hundred forty-three thousand, ninety-eight".