73020215 has 4 divisors (see below), whose sum is σ = 87624264. Its totient is φ = 58416168.

The previous prime is 73020191. The next prime is 73020307. The reversal of 73020215 is 51202037.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73020215 - 2⁸ = 73019959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7302017 + ... + 7302026.

It is an arithmetic number, because the mean of its divisors is an integer number (21906066).

Almost surely, 2^73020215 is an apocalyptic number.

73020215 is a deficient number, since it is larger than the sum of its proper divisors (14604049).

73020215 is a wasteful number, since it uses less digits than its factorization.

73020215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14604048.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 73020215 is about 8545.1866568262. The cubic root of 73020215 is about 417.9724938594.

The spelling of 73020215 in words is "seventy-three million, twenty thousand, two hundred fifteen".