73425420 has 96 divisors (see below), whose sum is σ = 229824000. Its totient is φ = 19461312.

The previous prime is 73425413. The next prime is 73425439. The reversal of 73425420 is 2452437.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122281 + ... + 122879.

It is an arithmetic number, because the mean of its divisors is an integer number (2394000).

Almost surely, 2^73425420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73425420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114912000).

73425420 is an abundant number, since it is smaller than the sum of its proper divisors (156398580).

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

73425420 is a wasteful number, since it uses less digits than its factorization.

73425420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 73425420 is about 8568.8634018754. The cubic root of 73425420 is about 418.7442081326.

Adding to 73425420 its reverse (2452437), we get a palindrome (75877857).

The spelling of 73425420 in words is "seventy-three million, four hundred twenty-five thousand, four hundred twenty".