72783070 has 32 divisors (see below), whose sum is σ = 135295200. Its totient is φ = 28169856.

The previous prime is 72783059. The next prime is 72783079. The reversal of 72783070 is 7038727.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72783079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84301 + ... + 85159.

It is an arithmetic number, because the mean of its divisors is an integer number (4227975).

Almost surely, 2^72783070 is an apocalyptic number.

72783070 is a deficient number, since it is larger than the sum of its proper divisors (62512130).

72783070 is a wasteful number, since it uses less digits than its factorization.

72783070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 72783070 is about 8531.2994320912. The cubic root of 72783070 is about 417.5195253039.

The spelling of 72783070 in words is "seventy-two million, seven hundred eighty-three thousand, seventy".