3728746278 has 64 divisors (see below), whose sum is σ = 8567562240. Its totient is φ = 1200830400.

The previous prime is 3728746267. The next prime is 3728746279. The reversal of 3728746278 is 8726478273.

3728746278 is a `hidden beast` number, since 3 + 7 + 2 + 8 + 7 + 4 + 627 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728746279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1272451 + ... + 1275377.

It is an arithmetic number, because the mean of its divisors is an integer number (133868160).

Almost surely, 2^3728746278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3728746278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4283781120).

3728746278 is an abundant number, since it is smaller than the sum of its proper divisors (4838815962).

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

3728746278 is a wasteful number, since it uses less digits than its factorization.

3728746278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730 (or 3724 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 54.

The square root of 3728746278 is about 61063.4610712495. The cubic root of 3728746278 is about 1550.6755678764.

The spelling of 3728746278 in words is "three billion, seven hundred twenty-eight million, seven hundred forty-six thousand, two hundred seventy-eight".