83781030 has 32 divisors (see below), whose sum is σ = 203503104. Its totient is φ = 22071776.

The previous prime is 83781007. The next prime is 83781041. The reversal of 83781030 is 3018738.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 14334 + ... + 19313.

It is an arithmetic number, because the mean of its divisors is an integer number (6359472).

Almost surely, 2^83781030 is an apocalyptic number.

83781030 is an abundant number, since it is smaller than the sum of its proper divisors (119722074).

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

83781030 is a wasteful number, since it uses less digits than its factorization.

83781030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33740.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 83781030 is about 9153.1978018614. The cubic root of 83781030 is about 437.5710339083.

Adding to 83781030 its reverse (3018738), we get a palindrome (86799768).

The spelling of 83781030 in words is "eighty-three million, seven hundred eighty-one thousand, thirty".