73745280 has 384 divisors, whose sum is σ = 305510400. Its totient is φ = 16035840.

The previous prime is 73745267. The next prime is 73745293. The reversal of 73745280 is 8254737.

73745280 is a `hidden beast` number, since 7 + 374 + 5 + 280 = 666.

It is an interprime number because it is at equal distance from previous prime (73745267) and next prime (73745293).

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1249891 + ... + 1249949.

It is an arithmetic number, because the mean of its divisors is an integer number (795600).

Almost surely, 2^73745280 is an apocalyptic number.

73745280 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73745280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152755200).

73745280 is an abundant number, since it is smaller than the sum of its proper divisors (231765120).

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

73745280 is a wasteful number, since it uses less digits than its factorization.

73745280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 73745280 is about 8587.5072052372. The cubic root of 73745280 is about 419.3513797819.

The spelling of 73745280 in words is "seventy-three million, seven hundred forty-five thousand, two hundred eighty".