72800408 has 8 divisors (see below), whose sum is σ = 136500780. Its totient is φ = 36400200.

The previous prime is 72800407. The next prime is 72800467. The reversal of 72800408 is 80400827.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72800401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4550018 + ... + 4550033.

Almost surely, 2^72800408 is an apocalyptic number.

It is an amenable number.

72800408 is a deficient number, since it is larger than the sum of its proper divisors (63700372).

72800408 is a wasteful number, since it uses less digits than its factorization.

72800408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100057 (or 9100053 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 72800408 is about 8532.3155122159. The cubic root of 72800408 is about 417.5526757732.

The spelling of 72800408 in words is "seventy-two million, eight hundred thousand, four hundred eight".