139227780 has 48 divisors (see below), whose sum is σ = 391849920. Its totient is φ = 36935808.

The previous prime is 139227749. The next prime is 139227797. The reversal of 139227780 is 87722931.

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, 5931 + ... + 17709.

It is an arithmetic number, because the mean of its divisors is an integer number (8163540).

Almost surely, 2^139227780 is an apocalyptic number.

139227780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139227780 is an abundant number, since it is smaller than the sum of its proper divisors (252622140).

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

139227780 is a wasteful number, since it uses less digits than its factorization.

139227780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988 (or 11986 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 139227780 is about 11799.4821920286. The cubic root of 139227780 is about 518.2929475972.

The spelling of 139227780 in words is "one hundred thirty-nine million, two hundred twenty-seven thousand, seven hundred eighty".