73976220 has 48 divisors (see below), whose sum is σ = 230149920. Its totient is φ = 19726848.

The previous prime is 73976219. The next prime is 73976233. The reversal of 73976220 is 2267937.

It is a super-2 number, since 2×73976220² = 10944962250976800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 67957 + ... + 69036.

It is an arithmetic number, because the mean of its divisors is an integer number (4794790).

Almost surely, 2^73976220 is an apocalyptic number.

It is an amenable number.

73976220 is an abundant number, since it is smaller than the sum of its proper divisors (156173700).

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

73976220 is a wasteful number, since it uses less digits than its factorization.

73976220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137011 (or 137003 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 73976220 is about 8600.9429715584. The cubic root of 73976220 is about 419.7886691930.

The spelling of 73976220 in words is "seventy-three million, nine hundred seventy-six thousand, two hundred twenty".