72619481 has 12 divisors (see below), whose sum is σ = 80080896. Its totient is φ = 65803320.

The previous prime is 72619423. The next prime is 72619483. The reversal of 72619481 is 18491627.

It is a de Polignac number, because none of the positive numbers 2^k-72619481 is a prime.

It is a super-2 number, since 2×72619481² = 10547178041418722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72619483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45560 + ... + 47126.

It is an arithmetic number, because the mean of its divisors is an integer number (6673408).

Almost surely, 2^72619481 is an apocalyptic number.

It is an amenable number.

72619481 is a deficient number, since it is larger than the sum of its proper divisors (7461415).

72619481 is a wasteful number, since it uses less digits than its factorization.

72619481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1961 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 72619481 is about 8521.7064605629. The cubic root of 72619481 is about 417.2064816353.

The spelling of 72619481 in words is "seventy-two million, six hundred nineteen thousand, four hundred eighty-one".