72894550 has 12 divisors (see below), whose sum is σ = 135583956. Its totient is φ = 29157800.

The previous prime is 72894539. The next prime is 72894581. The reversal of 72894550 is 5549827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 728896 + ... + 728995.

It is an arithmetic number, because the mean of its divisors is an integer number (11298663).

Almost surely, 2^72894550 is an apocalyptic number.

72894550 is a deficient number, since it is larger than the sum of its proper divisors (62689406).

72894550 is a wasteful number, since it uses less digits than its factorization.

72894550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457903 (or 1457898 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 72894550 is about 8537.8305206885. The cubic root of 72894550 is about 417.7325846179.

The spelling of 72894550 in words is "seventy-two million, eight hundred ninety-four thousand, five hundred fifty".