38469780 has 36 divisors (see below), whose sum is σ = 116692212. Its totient is φ = 10258560.

The previous prime is 38469773. The next prime is 38469787. The reversal of 38469780 is 8796483.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38469773) and next prime (38469787).

It can be written as a sum of positive squares in 2 ways, for example, as 7064964 + 31404816 = 2658^2 + 5604^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38469787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106681 + ... + 107040.

Almost surely, 2^38469780 is an apocalyptic number.

38469780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38469780 is an abundant number, since it is smaller than the sum of its proper divisors (78222432).

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

38469780 is a wasteful number, since it uses less digits than its factorization.

38469780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213736 (or 213731 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 38469780 is about 6202.4011479426. The cubic root of 38469780 is about 337.5772991669.

The spelling of 38469780 in words is "thirty-eight million, four hundred sixty-nine thousand, seven hundred eighty".