140026730 has 16 divisors (see below), whose sum is σ = 253656360. Its totient is φ = 55653312.

The previous prime is 140026729. The next prime is 140026763. The reversal of 140026730 is 37620041.

It can be written as a sum of positive squares in 4 ways, for example, as 67453369 + 72573361 = 8213^2 + 8519^2 .

It is a super-2 number, since 2×140026730² = 39214970228985800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140026696 and 140026705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43025 + ... + 46164.

Almost surely, 2^140026730 is an apocalyptic number.

140026730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140026730 is a deficient number, since it is larger than the sum of its proper divisors (113629630).

140026730 is a wasteful number, since it uses less digits than its factorization.

140026730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89353.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 140026730 is about 11833.2890609500. The cubic root of 140026730 is about 519.2824545982.

Adding to 140026730 its reverse (37620041), we get a palindrome (177646771).

The spelling of 140026730 in words is "one hundred forty million, twenty-six thousand, seven hundred thirty".