72303274 has 16 divisors (see below), whose sum is σ = 110215080. Its totient is φ = 35569600.

The previous prime is 72303269. The next prime is 72303277. The reversal of 72303274 is 47230327.

It can be written as a sum of positive squares in 4 ways, for example, as 72131049 + 172225 = 8493^2 + 415^2 .

It is a super-2 number, since 2×72303274² = 10455526862238152, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (72303277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33912 + ... + 35980.

Almost surely, 2^72303274 is an apocalyptic number.

72303274 is a deficient number, since it is larger than the sum of its proper divisors (37911806).

72303274 is a wasteful number, since it uses less digits than its factorization.

72303274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 72303274 is about 8503.1331872434. The cubic root of 72303274 is about 416.6000532087.

The spelling of 72303274 in words is "seventy-two million, three hundred three thousand, two hundred seventy-four".