73157420 has 24 divisors (see below), whose sum is σ = 175578144. Its totient is φ = 25082496.

The previous prime is 73157419. The next prime is 73157423. The reversal of 73157420 is 2475137.

It is not an unprimeable number, because it can be changed into a prime (73157423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261137 + ... + 261416.

It is an arithmetic number, because the mean of its divisors is an integer number (7315756).

Almost surely, 2^73157420 is an apocalyptic number.

73157420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73157420 is an abundant number, since it is smaller than the sum of its proper divisors (102420724).

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

73157420 is a wasteful number, since it uses less digits than its factorization.

73157420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522569 (or 522567 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 73157420 is about 8553.2110929171. The cubic root of 73157420 is about 418.2341201983.

The spelling of 73157420 in words is "seventy-three million, one hundred fifty-seven thousand, four hundred twenty".