87741780 has 192 divisors, whose sum is σ = 303464448. Its totient is φ = 18501120.

The previous prime is 87741767. The next prime is 87741817. The reversal of 87741780 is 8714778.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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 63 ways as a sum of consecutive naturals, for example, 299314 + ... + 299606.

It is an arithmetic number, because the mean of its divisors is an integer number (1580544).

Almost surely, 2^87741780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87741780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151732224).

87741780 is an abundant number, since it is smaller than the sum of its proper divisors (215722668).

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

87741780 is a wasteful number, since it uses less digits than its factorization.

87741780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 87741780 is about 9367.0582361807. The cubic root of 87741780 is about 444.3605342052.

The spelling of 87741780 in words is "eighty-seven million, seven hundred forty-one thousand, seven hundred eighty".