72019562 has 4 divisors (see below), whose sum is σ = 108029346. Its totient is φ = 36009780.

The previous prime is 72019561. The next prime is 72019613. The reversal of 72019562 is 26591027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26591027 = 67 ⋅396881.

It can be written as a sum of positive squares in only one way, i.e., 70744921 + 1274641 = 8411^2 + 1129^2 .

It is not an unprimeable number, because it can be changed into a prime (72019561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18004889 + ... + 18004892.

Almost surely, 2^72019562 is an apocalyptic number.

72019562 is a deficient number, since it is larger than the sum of its proper divisors (36009784).

72019562 is a wasteful number, since it uses less digits than its factorization.

72019562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36009783.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 72019562 is about 8486.4339978580. The cubic root of 72019562 is about 416.0544376800.

The spelling of 72019562 in words is "seventy-two million, nineteen thousand, five hundred sixty-two".