72049450 has 36 divisors (see below), whose sum is σ = 147314790. Its totient is φ = 26197600.

The previous prime is 72049447. The next prime is 72049457. The reversal of 72049450 is 5494027.

It can be written as a sum of positive squares in 3 ways, for example, as 47872561 + 24176889 = 6919^2 + 4917^2 .

It is a super-2 number, since 2×72049450² = 10382246490605000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72049457) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 96 + ... + 12004.

Almost surely, 2^72049450 is an apocalyptic number.

72049450 is an abundant number, since it is smaller than the sum of its proper divisors (75265340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72049450 is a wasteful number, since it uses less digits than its factorization.

72049450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11943 (or 11927 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 72049450 is about 8488.1947432891. The cubic root of 72049450 is about 416.1119836898. Note that the first 3 decimals are identical.

The spelling of 72049450 in words is "seventy-two million, forty-nine thousand, four hundred fifty".