139263250 has 32 divisors (see below), whose sum is σ = 297947520. Its totient is φ = 47746800.

The previous prime is 139263211. The next prime is 139263251. The reversal of 139263250 is 52362931.

It is not an unprimeable number, because it can be changed into a prime (139263251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38040 + ... + 41539.

It is an arithmetic number, because the mean of its divisors is an integer number (9310860).

Almost surely, 2^139263250 is an apocalyptic number.

139263250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139263250 is an abundant number, since it is smaller than the sum of its proper divisors (158684270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139263250 is an equidigital number, since it uses as much as digits as its factorization.

139263250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79603 (or 79593 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 139263250 is about 11800.9851283696. The cubic root of 139263250 is about 518.3369577076.

The spelling of 139263250 in words is "one hundred thirty-nine million, two hundred sixty-three thousand, two hundred fifty".