73987620 has 48 divisors (see below), whose sum is σ = 236761728. Its totient is φ = 16911360.

The previous prime is 73987597. The next prime is 73987633. The reversal of 73987620 is 2678937.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87661 + ... + 88500.

It is an arithmetic number, because the mean of its divisors is an integer number (4932536).

Almost surely, 2^73987620 is an apocalyptic number.

73987620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73987620 is an abundant number, since it is smaller than the sum of its proper divisors (162774108).

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

73987620 is a wasteful number, since it uses less digits than its factorization.

73987620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176180 (or 176178 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 73987620 is about 8601.6056640606. The cubic root of 73987620 is about 419.8102317304.

The spelling of 73987620 in words is "seventy-three million, nine hundred eighty-seven thousand, six hundred twenty".