139773480 has 192 divisors, whose sum is σ = 532370880. Its totient is φ = 29030400.

The previous prime is 139773479. The next prime is 139773497. The reversal of 139773480 is 84377931.

It is a super-2 number, since 2×139773480² = 39073251422620800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63600 + ... + 65760.

It is an arithmetic number, because the mean of its divisors is an integer number (2772765).

Almost surely, 2^139773480 is an apocalyptic number.

139773480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139773480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266185440).

139773480 is an abundant number, since it is smaller than the sum of its proper divisors (392597400).

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

139773480 is a wasteful number, since it uses less digits than its factorization.

139773480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 139773480 is about 11822.5834740128. The cubic root of 139773480 is about 518.9692104945.

The spelling of 139773480 in words is "one hundred thirty-nine million, seven hundred seventy-three thousand, four hundred eighty".