102723240 has 64 divisors (see below), whose sum is σ = 309706560. Its totient is φ = 27256320.

The previous prime is 102723209. The next prime is 102723251. The reversal of 102723240 is 42327201.

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, 23292 + ... + 27348.

It is an arithmetic number, because the mean of its divisors is an integer number (4839165).

Almost surely, 2^102723240 is an apocalyptic number.

102723240 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 102723240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154853280).

102723240 is an abundant number, since it is smaller than the sum of its proper divisors (206983320).

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

102723240 is a wasteful number, since it uses less digits than its factorization.

102723240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282 (or 4278 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 102723240 is about 10135.2474069457. The cubic root of 102723240 is about 468.3345916164.

The spelling of 102723240 in words is "one hundred two million, seven hundred twenty-three thousand, two hundred forty".