72703740 has 48 divisors (see below), whose sum is σ = 204285312. Its totient is φ = 19319616.

The previous prime is 72703733. The next prime is 72703751. The reversal of 72703740 is 4730727.

72703740 = T₄₀₁₅ + T₄₀₁₆ + ... + T₄₀₂₃.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 72703698 and 72703707.

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, 16447 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (4255944).

Almost surely, 2^72703740 is an apocalyptic number.

It is an amenable number.

72703740 is an abundant number, since it is smaller than the sum of its proper divisors (131581572).

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

72703740 is a wasteful number, since it uses less digits than its factorization.

72703740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4264 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 72703740 is about 8526.6488141591. The cubic root of 72703740 is about 417.3677781784.

The spelling of 72703740 in words is "seventy-two million, seven hundred three thousand, seven hundred forty".