140812838 has 32 divisors (see below), whose sum is σ = 228614400. Its totient is φ = 64842336.

The previous prime is 140812807. The next prime is 140812871. The reversal of 140812838 is 838218041.

It is a super-2 number, since 2×140812838² = 39656510691228488, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140812798 and 140812807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279695 + ... + 280197.

It is an arithmetic number, because the mean of its divisors is an integer number (7144200).

Almost surely, 2^140812838 is an apocalyptic number.

140812838 is a deficient number, since it is larger than the sum of its proper divisors (87801562).

140812838 is a wasteful number, since it uses less digits than its factorization.

140812838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 140812838 is about 11866.4585281372. The cubic root of 140812838 is about 520.2523898064.

The spelling of 140812838 in words is "one hundred forty million, eight hundred twelve thousand, eight hundred thirty-eight".