72415390 has 16 divisors (see below), whose sum is σ = 130507200. Its totient is φ = 28930720.

The previous prime is 72415373. The next prime is 72415423. The reversal of 72415390 is 9351427.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5136 + ... + 13084.

It is an arithmetic number, because the mean of its divisors is an integer number (8156700).

Almost surely, 2^72415390 is an apocalyptic number.

72415390 is a deficient number, since it is larger than the sum of its proper divisors (58091810).

72415390 is a wasteful number, since it uses less digits than its factorization.

72415390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 72415390 is about 8509.7232622454. The cubic root of 72415390 is about 416.8152735698.

The spelling of 72415390 in words is "seventy-two million, four hundred fifteen thousand, three hundred ninety".