101690400 has 144 divisors (see below), whose sum is σ = 378350784. Its totient is φ = 23239680.

The previous prime is 101690377. The next prime is 101690417. The reversal of 101690400 is 4096101.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 23 ways as a sum of consecutive naturals, for example, 13774 + ... + 19826.

It is an arithmetic number, because the mean of its divisors is an integer number (2627436).

Almost surely, 2^101690400 is an apocalyptic number.

101690400 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 101690400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189175392).

101690400 is an abundant number, since it is smaller than the sum of its proper divisors (276660384).

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

101690400 is a wasteful number, since it uses less digits than its factorization.

101690400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083 (or 6070 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 101690400 is about 10084.1658058562. The cubic root of 101690400 is about 466.7596640059.

The spelling of 101690400 in words is "one hundred one million, six hundred ninety thousand, four hundred".