101478740 has 48 divisors (see below), whose sum is σ = 234831744. Its totient is φ = 36528000.

The previous prime is 101478733. The next prime is 101478787. The reversal of 101478740 is 47874101.

Added to its reverse (47874101) it gives a square (149352841 = 12221²).

It is a junction number, because it is equal to n+sod(n) for n = 101478697 and 101478706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19937 + ... + 24503.

It is an arithmetic number, because the mean of its divisors is an integer number (4892328).

Almost surely, 2^101478740 is an apocalyptic number.

101478740 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 101478740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117415872).

101478740 is an abundant number, since it is smaller than the sum of its proper divisors (133353004).

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

101478740 is a wasteful number, since it uses less digits than its factorization.

101478740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688 (or 4686 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 101478740 is about 10073.6656684645. The cubic root of 101478740 is about 466.4355987586.

Adding to 101478740 its reverse (47874101), we get a square (149352841 = 12221²).

The spelling of 101478740 in words is "one hundred one million, four hundred seventy-eight thousand, seven hundred forty".