1400723228 has 24 divisors (see below), whose sum is σ = 2612009232. Its totient is φ = 654960384.

The previous prime is 1400723213. The next prime is 1400723231. The reversal of 1400723228 is 8223270041.

It is a super-3 number, since 3×1400723228³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1400723228.

It is a congruent number.

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, 54926 + ... + 76277.

It is an arithmetic number, because the mean of its divisors is an integer number (108833718).

Almost surely, 2^1400723228 is an apocalyptic number.

It is an amenable number.

1400723228 is a deficient number, since it is larger than the sum of its proper divisors (1211286004).

1400723228 is a wasteful number, since it uses less digits than its factorization.

1400723228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131381 (or 131379 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 1400723228 is about 37426.2371605803. The cubic root of 1400723228 is about 1118.8815439593.

Adding to 1400723228 its reverse (8223270041), we get a palindrome (9623993269).

The spelling of 1400723228 in words is "one billion, four hundred million, seven hundred twenty-three thousand, two hundred twenty-eight".