72049377 has 4 divisors (see below), whose sum is σ = 96065840. Its totient is φ = 48032916.

The previous prime is 72049339. The next prime is 72049379. The reversal of 72049377 is 77394027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72049377 - 2¹⁴ = 72032993 is a prime.

It is a super-2 number, since 2×72049377² = 10382225452176258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72049379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12008227 + ... + 12008232.

It is an arithmetic number, because the mean of its divisors is an integer number (24016460).

Almost surely, 2^72049377 is an apocalyptic number.

It is an amenable number.

72049377 is a deficient number, since it is larger than the sum of its proper divisors (24016463).

72049377 is a wasteful number, since it uses less digits than its factorization.

72049377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24016462.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 72049377 is about 8488.1904431981. The cubic root of 72049377 is about 416.1118431558. Note that the first 3 decimals are identical.

The spelling of 72049377 in words is "seventy-two million, forty-nine thousand, three hundred seventy-seven".