72702026 has 4 divisors (see below), whose sum is σ = 109053042. Its totient is φ = 36351012.

The previous prime is 72702023. The next prime is 72702067. The reversal of 72702026 is 62020727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62020727 = 73 ⋅849599.

It can be written as a sum of positive squares in only one way, i.e., 40768225 + 31933801 = 6385^2 + 5651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72701986 and 72702004.

It is not an unprimeable number, because it can be changed into a prime (72702023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18175505 + ... + 18175508.

Almost surely, 2^72702026 is an apocalyptic number.

72702026 is a deficient number, since it is larger than the sum of its proper divisors (36351016).

72702026 is a wasteful number, since it uses less digits than its factorization.

72702026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36351015.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72702026 is about 8526.5483051467. The cubic root of 72702026 is about 417.3644983197.

The spelling of 72702026 in words is "seventy-two million, seven hundred two thousand, twenty-six".